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11 media by topicpage 1 of 1

Inspection of an Ontario Salt Mine | Inspection d’une mine de sel en Ontario

Learn what Ministry of Labour health and safety inspectors look for during an inspection visit of a mine development at a soft rock salt mine in Goderich, Ont. A descriptive transcript for this video is availa... more

Dynamiting dangerous walls on Market St., after the fire, San Francisco Disaster, U.S.A.

Stereo shows a man from the Building Committee driving a car on Market Street toward an explosion in the distance, after the San Francisco earthquake in 1906.

Dynamiting dangerous walls on Market St., after the fire, San Francisco Disaster, U.S.A.

Stereo shows a man from the Building Committee driving a car on Market Street toward an explosion in the distance, after the San Francisco earthquake in 1906.