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Dossiê Science and Technology Con objetos digitales
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Drill Bit Testing

File contains photographs depicting close view of drill bits used in the Cassiar mine. The photos were taken for documentary purposes during an evaluation procedure in which the bits were tested and compared. 32 of the photos are adhered to three ...

Churchill Look-Out Photographs

Photographs are panoramas taken from the Churchill BC Forest Service Lookout, located at latitude 54°04' and longitude 122°16'. The photographs were bound together and include a transparent grid that was intended to be used for locating ...