DescriptionInsertingdynamiteintohole.jpg English: Tennessee Valley Authority. Construction of Douglas Dam. Placing a dynamite charge in a blast hole in bedrock
effect upon them juvl, therefore, holes were bored into the centre, small charges of dynamite were inserted, aud in tins manner the logs were split auart.
rock salt mine, Kansas Description View of a worker inserting sticks of dynamiteinto blasting holes at a rock salt mine in Kansas. This photograph is one