Items
Item Number Date Description
1283 More info . . . 1283 January 1925 Paper by L.C. Sabin, Marine Review, January 1925: Diagram No. 4; U.S. waterways, cost per ton-mile of freight carried
1284 More info . . . 1284 18 February 1926 St. Marys River: Survey of Round Island middle ground; camp at Birch Point
1285 More info . . . 1285 18 February 1926 St. Marys River: Survey of Round Island middle ground; ice boring machines and sounding reels
1286 More info . . . 1286 18 February 1926 St. Marys River: Survey of Round Island middle group; probing equipment
1287 More info . . . 1287 12 April 1926 St. Marys Falls Canal: Emergency dam test; wicket bridge and alternate wickets in place, upstream view
1288 More info . . . 1288 13 April 1926 St. Marys Falls Canal: Emergency dam test; all wickets in place, upstream view
1289 More info . . . 1289 15 April 1926 St. Marys Falls Canal: Emergency dam test; 20 needles in place in wickets, downstream view
1290 More info . . . 1290 17 April 1926 St. Marys Falls Canal: Emergency dam test; 53 of 60 needles in place in wickets, head of water 14 ft.
1291 More info . . . 1291 19 April 1926 St. Marys Falls Canal: Emergency dam test completed; head of water on dam 18.5 ft., difference between upper and lower pool 19.9 ft.
1292 More info . . . 1292 20 August 1926 St. Marys Falls Canal: Repair to southwest pier; placing concrete under superstructure at 480 E
1293 More info . . . 1293 24 August 1926 St. Marys Falls Canal: Repair to southwest pier; forms for concrete under superstructure at 600 E
1294 More info . . . 1294 8 December 1926 St. Marys Falls Canal: Part of about 100 vessels below locks awaiting downbound passage through icebound lower St. Marys River
1295 More info . . . 1295 22 December 1926 St. Marys Falls Canal: Ice on floor of Fourth Lock chambers after season's last lockage
1296 More info . . . 1296 22 December 1926 St. Marys Falls Canal: Fourth Lock service gates; removal of ice between girders
1297 More info . . . 1297 5 April 1927 St. Marys Falls Canal: Emergency dam test; upstream view above Davis Lock
Showing 1321 to 1335 of 1780 items