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This collection contains 3 movies and is over 1 1/2 hour of video.
| Title |
Description |
Duration |
| Story of Dynamite |
This film from the bureau of mines covers the history of dynamite. Starting with the ingredients, like Nitrate of Soda, brought in crystalline form from south America, and wood pulp, Shows the conversion of these items and others in the manufacture of dynamite. See the creation of the stick form and gelatin dynamite. See the testing procedures used to test the power of the dynamite, and some of the conditions in which it might be used. Learn the proper packing technique for safe transportation. Watch as several loads of Dynamite are used to bring down rock, buildings, and ice, including some underwater demolition.
Silent, B&W
|
20:10
|
| Story of Steel |
Film from the mining bureau focusing on the important contributions of the steel industry. Starting with the location of some of the world's Iron Ore deposits and the mining techniques used to extract it. See animations and live shots of the smelting process to refine the ore. See as different additives are added in different proportions to achieve the correct grades of steel. See rolling presses form the steel, as well as the drawing of steel into wires. Watch as sheet steel is created and the creation of pipes as well.
Silent, B&W |
1:00:00
|
Rock Dusted Coal Mine - 1926
|
Another film from the Bureau of Mines, this one on the use of noncombustible dust to prohibit explosions in coal mines. Shot in the New Orient Mine , West Frankfort, Illinois. See the exterior of the mine, and shots of the minors going into the hole. See great shots of the main bottom shaft making for a safer mine. travel along on a coal car, and watch as the rock dust is applied. Learn the specifications of the dust itself, and watch the duster in action. See the rigorous testing done on all samples of the mine dust to assure that a good mix of rock dust is around to inhibit explosions. See Rock dust barriers, specifically the V-type trough barriers. Watch as the trough barriers are tested, and see how they are used.
Silent, B&W
|
20:28 |
|
