Ignition Engine
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Technical film; self-explanatory. Planni earth-moving operations to create subgrade; mixing sand and clay; locating subgrade to prevent failure from water; and creating artificial subgrade on marshy ground
Complete catalog record
Series: 17 minutes, silent Subgrade Preparation U.S. Department of the Army, (Military Roads Series No. 5
Film number: TF 5-1197
Type: Motion Picture
Film number: TF 5-1197
Type: Motion Picture
Source: 3434 U.S. Government Films · Record added 2026-07-13 14:19:23