This small collection consists of photographs that depict the progress of several construction projects at the Holtwood and Safe Harbor plants. Most of these images date from 1951 to 1954, well after the original construction of both sites.

There are two albums and several loose pages containing two photographs on a page. The albums have been disbound for conservation purposes. The photographs show the construction of the coal unloading dock and dredging equipment at Safe Harbor.

The coal unloading dock photographs depict the construction of the unloader, abutment for bridge, counterweight guides, septic tanks, unloader bins, raw silt bunker, cell bracing, transporting cell patterns, and anchors for mooring rings for dock cells. There are images after the construction is completed (or nearly complete) that show the unloading of 800 ton barges.

The photographs of dredging equipment show the assembly of the dredge, the hull unloading engine, and installation of the dredging ladder and spud frame. There are images of a generator, lifting engine, dredge suction inlet, tugboat, rudders, propellers, storage tanks, bilge pump, a cutting head, main hoist, and main silt pump. This set of photographs also includes views of a barge launching, a tugboat launching, the removing of barge from a railroad car, a pump rate test, engine room interiors, operator’s controls, switchboard, and motor control center.

There are a number of aerial photographs of the Safe Harbor coal plant. And a set of photographs of an exhibit called Help Keep America Green.

There are three albums of the Holtwood Steam Electric Station. These albums have been disbound for conservation purposes. Although all three albums contain photographs of the same construction project it is two different sets of images; one solo album and a volume one and two set. Some of the images in the solo album are also contained in the other two albums. The two volume set contains type written captions on the back of every photograph. The albums and captions seem to have been created in 1954, though the images themselves date from 1952 to 1954.

The photographs are of the Holtwood Steam Electric Station extension which was built between 1952 and 1954. These images depict the construction of the raw coal conveyor, coal transfer house, pulverizing mill, turbine room, boiler room and condensate storage tank. Shown are the driving timber for piling, support silo for coal storage conveyor, conveyor envelop, the conduit, steel erection, foundation, reinforcement, piping, track hopper, generator pedestal, furnace bottom ash basin, and sump pumps. There are views of the coal storage area, conduit for station transformer, the encasing of the “korduct” conduit, coal transfer tower and conveyor. There are overall aerial views as well as specific aerial shots of the fly ash disposal area.

There are a few photographs from September 1931 that show a grounding reactor for a york circuit at Holtwood, the “new” ice boom, and transmission lines at Safe Harbor. There are two photographs of a room crane taken in 1939. There is one image from 1992 that is an aerial photograph of the Holtwood plant.

There are images from two inspection trips, one to the Shawinigan Water and Power Company and the Safe Harbor plant. These show group portraits and snapshots of the board of directors and views of the plants. There are also a number of high-elevation aerial views of farmlands, as well as views of farm buildings and fields. There are exteriors and interior images of the Baltimore Electro Alloys Co. plant, scenes along the Susquehanna River, views of the River Coal Storage at Holtwood and a few group portraits of watchmen at the Safe Harbor Water Power Corp.