Black and white image of the low mix concrete plant on the Colorado River. Two bridges and and construction can be seen in this image as well.

Black and white image of the low mix concrete plant on the Colorado River. Two bridges and construction equipment can be seen as well.

From the Morgan Sweeney Photograph Collection (PH-00228). Water Treatment Plant Wash Water Tank for new installation in December 1950. Tank steel 50,000 gallon capacity – dimension 12’0” diameter, 60’0”long. DWG – No. 45-301-4143 = $6,059.00.

From the KLVX Steamboats on the Colorado Photograph Collection (PH-00156)

Another view of high scalers "Hi-Scalers. I personally landed a boat load of dynamite at that sand beach one hot summer day in 1933." Note on back: "Miss Vegas and Stetson were bought by Six Companies. Then Miss Vegas hit a sand wave with a load of Steel and overturned and Sunk. Boat wasn't recovered until Coffer Dam was completed. Wint doubts that Ray ever ran a boat for Six Companies. - James J. Hester, son-in-law of W. A. 'Wint' Davis, 1992."

Note with image: "This is where the Nevada sub-station is. Compressor was carried in pieces by the mules and reassembled... It took all day just to walk here and back, I mean all day." " Notes on back of image: "Building power substation above Boulder Dam, Air compressor in foreground, c. 1932. Cleaning surface prior to building sub-station. Dual generator with eight tires was pushed up to this location with bulldozers. - W. A. Davis, 1992."

This photograph has three images. The first one (0272_0081) is upside-down and reads, "Record pour. Graveyard crew on No. 7 cableway. 240 8 cu. buckets. 8 hour shift, Boulder Dam. 12-18-34" There is a list on the back: "1. high-line operator 2. Bell boys hi-trussel and on dam. Andy 3. Donkey operators 4. Hook tenders 5. shifter, of crew (Colette) 6. Night Supt. Car Colette 7. Regular crew 8. Me. Returned to help crew for this record from form-raising crew. "All worked on No. 7 line in some capacity, except 8. Kizziar (KI-ZAH) -as a regular. Lots of work that day. Didn't take time for lunch. Run over to grab a bite and jump back. My job was to trip the safety (dog). Bucket was in the pour every two minutes. Just time to wade out of knee deep mud. On top trussel everything was panic. Bellboy sets an empty bucket in crib of flat car (which has three cribs). Hook tender unhooks it and donkey driver will back up to hook on full bucket. Bellboy signals hi-ball -- operator knows how far to take it." The other two images (0272_0082 and 0272_0083) did not have an inscription with the image.