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UPF Tower Crane demobilization

UPF Tower Crane demobilization

UPF Tower Crane demobilization

UPF Tower Crane demobilization

UPF Tower Crane demobilization

UPF Tower Crane demobilization

UPF Construction Site—February 2024

UPF Construction Site—February 2024

Support crane for west tower crane demobilization

UPF welding

Snow on the UPF Construction Site—January 2024

Pre-energization checks in advance of Process Support Facilities energization

UPF Construction Site—February 2024

Pre-energization checks in advance of Process Support Facilities energization

Process Support Facilities January 2024

UPF Tower Crane demobilization underway

UPF Tower Crane

UPF Tower Crane demobilization

UPF Pipefitter

Main Process Building commodities

HCON

UPF Ironworker

Commodity installation

Under Secretary of Energy for Nuclear Security and NNSA Administrator Jill Hruby UPF tour

UPF Construction Site August 2023

UPF Construction Site July 2023

UPF Firewater Tank

UPF Construction Site June 2023

UPF Construction Site May 2023

UPF Construction Site May 2023

Process Support Facilities May 2023

HEUMF Connector

UPF Tower Crane

Electrical commodity installation

UPF Project March 2023

UPF Construction Site March 2023

Pipefitters working in the Salvage and Accountability Building

Electrician working in the Salvage and Accountability Building

Personnel Support Building window installation

Main Process Building siding installation

Main Process Building equipment installation

Main Process Building equipment installation

Main Process Building equipment installation

Main Process Building process skid piping

Main Process Building equipment installation

Personnel Support Building in January 2023

UPF Project January 2023

Process Support Facilities December 2023

UPF Project December 2022

Main Process Building equipment installation

Main Process Building November 2022

HEUMF Connector Rebar Installation

Main Process Building equipment installation

Main Process Building Air Handling Units

Main Process Building cable tray installation

Pipefitter working in the Main Process Building

UPF Project November 2022

Main Process Building, Mechanical Electrical Building and Salvage and Accountability Building late-October 2022

Salvage and Accountability Building, Personnel Support Building and Main Process Building late-October 2022

Main Process Building and Personnel Support Building late-October 2022

Secretary of Energy Jennifer Granholm visits the UPF Project

Secretary of Energy Jennifer Granholm visits the UPF Project

Secretary of Energy Jennifer Granholm visits the UPF Project

Secretary of Energy Jennifer Granholm visits the UPF Project

Secretary of Energy Jennifer Granholm visits the UPF Project

Secretary of Energy Jennifer Granholm visits the UPF Project

Secretary of Energy Jennifer Granholm visits the UPF Project

Secretary of Energy Jennifer Granholm visits the UPF Project

Secretary of Energy Jennifer Granholm visits the UPF Project

Secretary of Energy Jennifer Granholm visits the UPF Project

Fall colors surrounding the Main Process Building

Personnel Support Building HVAC ductwork support installation

Salvage and Accountability glovebox team drifting the CAL WIE panels through the Personnel Support Building Level 2 window in preparation for installation

Main Process Building late-October 2022

UPF piping inspection

PIDAS progress

UPF construction site late-September 2022

Main Process Building exhaust fans

Main Process Building material storage rack delivery

Main Process Building Main Casting Furnace piping installation

Main Process Building Batch Makeup Staging Enclosure installation

Main Process Building, Salvage and Accountability Building, Personnel Support Building early-September 2022

Ironworkers prep structural steel for pipe supports installation in the Main Process Building Main Casting Area

UPF construction site late-August 2022

Process Support Facilities late-August 2022

UPF construction site late-August 2022

UPF construction site showing Main Process Building siding progress August-2022

HEUMF Connector August-2022

Main Process Building Batch Makeup Staging Enclosure

Main Process Building OMP Main Glovebox delivery

Main Process Building Batch Make-up staging enclosure assembly

Salvage and Accountability Building hood exhaust fans

An electrician working on the Salvage and Accountability Building Waste Preparation Walk-in Enclosure

Main Process Building, Salvage and Accountability Building and Personnel Support Building late-July 2022

UPF construction site July 2022

Final testing of Mechanical Electrical Building electrical systems

Main Process Building siding installation

PIDAS wall assembly

Main Process Building tool prep station table installation

Process Support Facilities Process Gas Yard piping installation

UPF construction site early-May 2022

Main Process Building siding installation

The first of four Main Process Building security personnel enclosures

Process Support Facilities pipe bridge

Process Support Facilities Process Gas Yard inspection

HEUMF Connector progress

Main Process Building Tool Prep Station

UPF Fire Tank Pump House

Salvage and Accountability Building waste preparation walk-in enclosure

Ironworkers installing HEUMF Connector structural steel

Ironworkers welding a Main Process Building security personnel enclosure

Mechanical Electrical Building air handling units

HEUMF Connector Progress

UPF construction site early-June 2022

Mechanical Electrical Building chilled water system

Main Process Building Tool Prep Station table

Salvage and Accountability Building

Mechanical Electrical Building

Pipefitters working tie-ins to the Salvage and Accountability Building POG Scrubber

Carpenters working on the HEUMF Connector

Mechanical Electrical Building electrical testing

Main Process Building equipment installation

Main Process Building siding installation

UPF Construction Site mid-June 2022

UPF Construction Site mid-June 2022

Placing the final security personnel enclosure

Placing the final security personnel enclosure

Salvage and Accountability Building, Personnel Support Building and Main Process Building

UPF construction site late-April 2022

Ironworker snapping structural steel bolts on the Fire Tank Pump House steel girts

Electrician installing cable tray on pipe rack

Piping installation in the Process Support Facilities Process Gas Yard

SAB Waste Preparation walk-in enclosure

The first HEUMF Connector concrete placement

Y-12 Site Manager Gene Sievers with UPF “In the Dry” Ceremony speakers

UPF “In the Dry” Ceremony

CNS UPF Project Director John Platt at the UPF “In the Dry” Ceremony

Y-12 Production Operations Senior Director Reed Mullins at the UPF “In the Dry” Ceremony

NNSA NPO Y-12 Deputy Field Office Manager Mary Helen Hitson at the UPF “In the Dry” Ceremony

UPF NNSA Federal Project Director Dale Christenson at the UPF “In the Dry” Ceremony

UPF BNI Project Manager Mike Robinson at the UPF “In the Dry” Ceremony

HEUMF Connector progress

Process Support Facilities process gas yard north pad concrete placement

Mechanical Electrical Building pipe insulation

Carpenters working on the HEUMF Connector

UPF utility piperack (shown to the right of the Process Support Facilities process gas yard) will carry commodities to and from the Process Support Facility

First decontamination glovebox section arrived to the Salvage and Accountability Building

Ironworker welding on a Main Process Building EPOD

UPF construction site early-April 2022

UPF construction site early-April 2022

Personnel Support Building Exterior Siding and Roofing is complete—late-February 2022

Firewater Tank Pumphouse— tank and pumphouse steel decking

Crane setting a Process Support Facilities Electrical Transformer

Mechanical Electrical Building Instrumentation Tubing Installation

UPF Construction Site showing Fire Tank Pump House Progress—late-January 2022

Process Support Facilities Sheetrock Installation

UPF Construction Site—early-January 2022

Personnel Support Building Progress—late-December 2021

UPF construction site—late-December 2021

Work on the Fire Tank Pump House roof beams

Mechanical Electrical Building Electrical Inspection

Pipefitters Installing Breathing Air System Piping in the Process Support Facilities Process Support Equipment Room

Main Process Building Ironworkers welding an HVAC louver

Eight vaporizers at the Process Support Facilities Gas Yard—Process Gas Yard deliveries are complete

Construction on the UPF Fire Tank Pumphouse is underway

Construction of the Uranium Processing Facility’s Personnel Support Building continues to progress with the installation of girt steel and metal siding.

Rack framed and wrapped for shipment, staged at supplier’s facility

A beautiful East Tennessee sunrise over the Uranium Processing Facility Project

The Uranium Processing Facility works toward UPF “in the dry” milestone by end of the summer

The UPF Main Process Building third-level wall installation continues with 21 of the final 29 placed.

Siding installation work on the Salvage and Accountability Building

Installation of the 13.8kV switchgear in the Uranium Processing Facility’s Mechanical Electrical Building

Two mission essential UPF employees work back to back with a COVID-19 safety partition between to maximize social distancing.

As part of the project’s COVID-19 safety actions, plexiglass partitions were installed and placed on breakroom tables to maximize social distancing while eating.

Two UPF ironworkers work together to tie rebar in place in preparation of the wall’s concrete placement at the Main Process Building.

The Mechanical Electrical Building houses all of the Uranium Processing Facility’s air handling units, which will be used to regulate and circulate the air throughout each building.

Work progresses at the Process Support Facilities with installation of structural steel. The subproject will achieve the “in the dry” milestone in March 2021.

Bulk waste water tanks at the Process Support Facilities.

Crews at the Main Process Building pour concrete to complete it’s first wall placement for the third level.

The Uranium Processing Facility continues to progress as the project works towards it’s 2025 completion date.

The Process Support Building begins to take shape with the installation of the structural steel.

UPF employees stand on the roof of the Salvage and Accountability Building in front of the process off gas stack.

UPF ironworker inspects a second elevation concrete wall on the Main Process Building.

Bright yellow temporary steel was installed on the outside of the Salvage and Accountability Building this month, which will allow large pieces of equipment to enter the facility after siding is installed.

Crews pave concrete on the Main Process Building’s (MPB) third elevation floor slabs. All MPB floor slabs were installed and completed in December 2020.

A UPF electrician inspects the wet receiver tank in the Mechanical Electrical Building, which will play a major role in providing safe air to the entire facility.

The Main Process Building continues to rise to greater heights as crews install the third elevation walls on the east end of the building.

Installation of structural steel began at the Process Support Facilities in October 2020 and is forecast to complete in March 2021.

The Main Process Building continues to rise to greater heights as crews install the third elevation walls on the east end of the building.

Installation of structural steel began at the Process Support Facilities in October 2020 and is forecast to complete in March 2021.

Ironworkers begin installing rebar on the third level of the Main Process Building.

A beautiful, blue sky day at the Uranium Processing Facility project

Work progresses on the perimeter intrusion detection and assessment system (PIDAS) at the Uranium Processing Facility.

The UPF Process Support Facilities building was successfully topped out and the installation of structural steel is complete.

UPF Welder and Pipe Fitter works on a Mechanical Electrical Building pipe.

Installation of the Main Process Building third level walls are well underway with five of the final 29 placed.

Crews install siding on the west side of the UPF Salvage and Accountability Building.

What started as concrete foundations, structural steel, and rebar two years ago is now three prominent buildings that, when finished, will support the Uranium Mission Strategy, ensuring the long-term viability, safety, and security of enriched uranium capabilities in the U.S.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

UPF placed the last piece of steel on the Salvage and Accountability with a topping out ceremony on October 26, 2020.

Pipe and hangers installation in the Salvage and Accountability Building.

Work progresses at the Process Support Facilities (PSF) with installation of structural steel and bulk waste water tanks

Work progresses at the Process Support Facilities (PSF) with installation of structural steel and bulk waste water tanks.

The Main Process Building placing concrete on the third level walls.

The Uranium Processing Facility project will continue to reach greater heights in 2021.

The Uranium Processing Facility will replace a World War II era building with a modern, more efficient, and safer facility for conducting highly enriched uranium processing operations at Y-12 National Security Complex

The Process Support Facilities (PSF) is laying the groundwork for vertical construction with the completion of excavation and mud mat placements.

The Process Support Facilities (PSF) is laying the groundwork for vertical construction with the completion of excavation and mud mat placements.

The Mechanical Electrical Building (MEB) is pictured on the left. The platform is used for equipment deliveries.

Installation of structural steel continues at the Salvage and Accountability Building.

The Main Process Building reached a major milestone as the second elevation walls were completed in August.

From left: Doug Fremont, NNSA chief of staff; John Howanitz, UPF project director; Randy Holman, UPF area manager for the Salvage and Accountability Building; NNSA Administrator Lisa Gordon-Hagerty; and Dale Christenson, UPF federal project director during the administrator’s visit to Y-12 on August 27, 2020

Brett Riffert, UPF area superintendent for the Salvage and Accountability Building, updates NNSA Administrator Lisa Gordon-Hagerty on recent progress

NNSA Administrator Lisa E. Gordon-Hagerty (center) with UPF Iron Workers in the Main Process Building

NNSA Administrator Lisa E. Gordon-Hagerty with UPF Iron Workers in the Main Process Building

NNSA Administrator Lisa E. Gordon-Hagerty studies a rendering at the UPF Salvage and Accountability Building

The UPF Project completed 12 Main Process Building (MPB) Concrete Wall Placements in just two months

Salvage and Accountability Building (SAB) completed its last concrete placement for elevated decks in June 2020

The UPF Project recognizes Lynch Bus Lines, a local school bus contractor, for their assistance during COVID-19 operations

Process Support Facilities (PSF) completed all piles and begin final excavation and mud mat placements

The Mechanical Electrical Building (MEB) continues to work through final construction activities to support turn-over to start-up in July and August

The Uranium Processing Facility Project Site in June 2020

Newly installed switchgear in the Mechanical Electrical Building (MEB)

The UPF Project completed 7 Main Process Building (MPB) Concrete Wall Placements in May

The Uranium Processing Facility Project Site in May 2020

Salvage and Accountability Building (SAB) concrete placement

The UPF Project recognizes Lynch Bus Lines, a local school bus contractor, for their assistance during COVID-19 operations

The Uranium Processing Facility Project glows in the early morning Tennessee sunrise.

Laura is a subcontracts administrator at the Uranium Processing Facility (UPF) Project. She has been building UPF since 2015 on the Acquisition Services team. Laura manages service and construction contracts, working with local and national companies that bid on work to support the construction of UPF.

Uranium Processing Facility veterans are recognized during a ceremony outside the Construction Support Building.

Members of the skilled craft workforce conducts finish work on the Uranium Processing Facility Main Process Building first level walls.

The cooling tower continues to rise next to the Uranium Processing Facility Mechanical and Electrical Building.

A Uranium Processing Facility team meeting is held in a Main Process Building corridor.

The first upper decking concrete placement took place at the Uranium Processing Facility Salvage and Accountability Building. The skilled craft workforce continues to prepare additional sections for upcoming concrete placements.

A Uranium Processing Facility (UPF) crew performs layout work in the UPF Salvage and Accountability Building.

A Uranium Processing Facility (UPF) team member works on the setup of Construction power in the UPF Salvage and Accountability Building.

Cable tray supports, cable tray, and heating, ventilation, and air conditioning equipment is installed on the Uranium Processing Facility Mechanical Electrical Building second floor.

Rebar, embeds, and penetrations are installed on the second level of the Uranium Processing Facility Main Process Building to prepare for upper deck concrete placements.

Uranium Processing Facility carpenters celebrate completion of Main Processing Building first level walls.

YPH-19-850598

Ironworkers install structural steel pieces in the first level of the Uranium Processing Facility Salvage and Accountability Building.

Carpenters on the Construction crew gather to celebrate the completion of first level walls at the Uranium Processing Facility Main Process Building.

Jessica is an ironworker at the Uranium Processing Facility. She is on the structural iron crew at the Main Process Building.

Forms are installed on the outside of a rebar wall curtain at the Main Process Building (MPB). Once inside and outside forms are installed, concrete is placed to construct the outside wall of the MPB.

As additional pieces of structural steel are installed at the Salvage and Accountability Building, work on the second floor begins.

The Uranium Processing Facility Project team has completed the first four Main Process Building walls and all the 27-foot elevation rebar curtain walls have been erected.

One of two capacitor banks for the Pine Ridge Substation is inspected during a turnover walkdown. The capacitor bank is designed to maintain a stable power supply for the Uranium Processing Facility and the Y-12 National Security Complex.

A Uranium Processing Facility team member places one of the final white steel shear tabs on the first floor of the Mechanical Electrical Building.

A crane moves a steel beam to be installed at the Uranium Processing Facility Project’s Salvage and Accountability Building. The first phase of structural steel installation will continue over the summer and calls for almost 800 pieces that collectively weigh about 1,500 tons.

Uranium Processing Facility (UPF) Ironworker Robert Burchfield was chosen as Local 384’s Apprentice of the Year and represented the local union at the 30th Annual Outstanding Apprentice of the Year Competition in Atlanta, Georgia, placing third in rebar skills. 11,000 tons of rebar will be used while building UPF.

Two additional cranes have been added at the Uranium Processing Facility site to support steel installation at the Salvage and Accountability Building, and rebar wall curtain placement at the Main Process Building.

Ironworkers install steel on the second floor of the Salvage and Accountability Building at the Uranium Processing Facility.

Steel at the Uranium Processing Facility Project’s Salvage and Accountability Building continues to be installed.

Installation of a communications system pole at the Substation for the Uranium Processing Facility.

Ground wire installation takes place on a communications line at the Uranium Processing Facility Substation.

Structural steel continues to be installed at the Uranium Processing Facility Project’s Salvage and Accountability Building. At 127,000 square-feet, the three-story SAB footprint is approximately the size of one football field.

Construction is almost complete on the Offsite Fabrication Facility located at the East TN Technology Park. This 100,000-square-foot facility will serve as the primary fabrication area during the construction of the Uranium Processing Facility.

Detailing begins on rebar once the walls are up at the Main Processing Building at Uranium Processing Facility.

Structural steel continues to be installed at the Uranium Processing Facility Project’s Salvage and Accountability Building. The steel columns currently being installed are about 60 feet tall and weigh between 10.5 and 12.5 tons each.

Steel at the Uranium Processing Facility Project’s Salvage and Accountability Building continues to be installed in rows from south to north, progressing across the building from east to west.

Fill material supporting utility work is delivered to the Uranium Processing Facility construction site.

The Mechanical Electrical Building (MEB) at the Uranium Processing Facility is now fully enclosed. This milestone includes installation of all siding, doors, roof, and louvers, and completion of underground utility work on the east and north side of the MEB.

Now that the Mechanical Electrical Building is fully enclosed, work continues inside to prepare for miscellaneous steel installation; electrical installation; heating, ventilation, and air conditioning placement; fire protection; fire proofing and bulk commodity installations.

An electrical pole is installed as part of the Substation Subproject that will support the Uranium Processing Facility.

Cement finishers smooth out part of a 885 cubic yard concrete placement at the Salvage and Accountability Building (SAB). It was the final topping slab placement for the SAB.

The first pieces of structural steel were installed at the Uranium Processing Facility Project’s Salvage and Accountability Building. The first phase of structural steel installation will continue over the summer and calls for almost 800 pieces that collectively weigh about 1,500 tons.

Recent progress at the Uranium Processing Facility can be clearly seen now that the Mechanical Electrical Building is enclosed, structural steel is up at the Salvage and Accountability Building, and concrete placements continue for vertical walls at the Main Process Building.

The final topping slab has been placed for the Salvage and Accountability Building. This was the last topping slab placement for the Uranium Processing Facility project.

A Uranium Processing Facility (UPF) civil field engineer uses a computer located on the UPF construction site to access 3-D models of the buildings and work packages.

The west tower crane at the Uranium Processing Facility relocates a manlift onto the Salvage and Accountability Building foundation.

Skilled ironworkers position rebar for a wall curtain at the Main Process Building.

Now that the first vertical wall has been placed at the Main Process Building, additional forms are added on to the inside and outside of the rebar wall curtain to prepare for the next concrete placements.

Carpenters assemble wall formwork sections before lifting them into place at the Main Process Building.

Ironworkers began installing first-level rebar curtain Feb. 4 on the Main Process Building (MPB). The outside rebar layer will be joined by an inside layer for the exterior wall of MPB. Formwork will then be placed outside the curtain and the concrete placed.

The last piece of structural steel was placed on the Mechanical Electrical Building on Feb. 11. The roof and the panels that make up the walls will be installed next. Completion is scheduled for early summer.

Nearly 24,000 cubic yards of concrete were placed for the slab of the Main Process Building, UPF’s largest facility. Concrete placement for the slab was completed on Feb. 16.

Workers placing embed plates for UPF’s Salvage and Accountability Building. The Mechanical Electrical Building is in the background.

Concrete placements for the base slab of the Main Process Building were completed in February. Nearly 24,000 cubic yards of concrete were used for the slab.

Roof decking and wall panels will be installed on the Mechanical Electrical Building now that structural steel has been placed.

This view of part of the UPF construction site shows the Main Process Building on the left and the Salvage and Accountability Building on the right.

TVA will complete testing and turnover of the substation this summer and it will be fully operational in 2020. The new substation will service both the Y-12 National Security Complex and the Uranium Processing Facility.

The new electrical substation being built by the Tennessee Valley Authority as part of the UPF Project will be significantly more efficient, economical and cost effective to operate.

Concrete placement has begun for the slab of the Salvage and Accountability Building (SAB). When complete, SAB will house waste preparation, decontamination, non-destructive assay and chemical recovery support systems.

In addition to placing concrete, crews are installing rebar and embeds on the west topper slab of the Main Process Building.

Concrete is being placed for the base slab of the Salvage Accountability Building (SAB). The concrete placement for the SAB slab will continue through the spring.

Installation of roof decking will begin when the second level steel is complete on the Mechanical Electrical Building, which is scheduled for February.

Workers place stay form between topper slabs on the Main Process Building (MPB) prior to concrete placement. MPB will be a 252,000-square-foot building with three levels.

In addition to placing concrete for the base slab of the Main Process Building, crews also placed rebar for the walls.

Crews continued to place concrete for the base slab of the Main Process Building in January.

The second level of steel on the Mechanical Electrical Building is being installed from west to east. Steel installation for the second level is scheduled for completion in February.

Concrete placements for the Main Process Building (MPB) continued in January. MPB is the largest of UPF’s three main buildings.

UPF’s Mechanical Electrical Building continued to rise as the installation of structural steel on the second floor got underway.

Rebar installation and concrete placement continue on UPF’s Main Process Building. The Construction Support Building in the background currently houses construction personnel.

An ironworker ties rebar on the second level of the Mechanical Electrical Building in preparation for elevated concrete placement and structural steel for the second floor.

Cones protect the electrical grounding system of the Salvage and Accountability Building (SAB) until concrete is placed for the foundation. SAB will contain waste preparation, decontamination, non-destructive assay and chemical recovery support systems.

Rebar installation continued on the Salvage and Accountability Building, right, in November, while rebar installation and concrete placement continued on the Main Process Building, left.

The concrete that forms the floor of the Mechanical Electrical Building was placed in November. The next step is installing structural steel on the second level.

UPF’s Mechanical Electrical Building, which will house most of the mechanical and electrical utility equipment required for UPF’s process facilities, rises behind rebar being placed for the Main Process Building.

Rebar is being placed for the walls of the Main Process Building. The square frame is for an emergency egress door and weighs 22,000 lbs.

A welder works on the cross bracing for the Mechanical Electrical Building (MEB) structure. MEB was the first of UPF’s three main facilities to go vertical.

A worker cleans recently cured concrete on the foundation of UPF’s Main Process Building, a 252,000-square-foot building which will house casting, special oxide, and some chemical recovery processes.

Crews began placing concrete for the slab of the Mechanical Electrical Building in May.

Rebar installation has begun on the Main Process Building and the Salvage and Accountability Building.

Several hundred UPF employees and their families attended UPF Family Day on June 15.

Work is progressing on the Mechanical Electrical Building.