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Workers use rotators to break rocks in an iron mine in New York, United States.

The various types of drills and bits used for drilling into rocks in the United States. An iron mine in northern New York. Men work on rocks in 40 to 100 feet deep mines. Rotators or automatic hammers being used to cut into rocks by a man. The rotators being operated by a hand as they drill into an ore bench in a mine. A man operates a hand rotator to break a large rock fragment.

Location: New York United States USA
Date: 1921
Duration: 2 min 0 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058836
Workers drill holes and extract iron ore in a mine in New York, United States.

The various types of drills and bits used for drilling into rocks in the United States. An iron mine in northern New York. Men in a mine use a heavy hammer drill to dig out holes in rocks. A workers fills explosives in the holes. Fuses of the explosives being lit up. The extracted ore being transported in cars. A Corliss hoist in operation.

Location: New York United States USA
Date: 1921
Duration: 3 min 43 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058837
Workers drill with rotators to sink a shaft in a mine in Michigan, United States.

The various types of drills and bits used for drilling into rocks in the United States. A Corliss air compressor that furnishes air power for rock drilling. Men in a mine in northern Michigan as they work with rotator hammers to sink a shaft 1700 feet below the surface. Six workers drill with rotators. A worker drills into the wall and roof of the mine. An auger rotator being used to drill into a soft ore bench.

Location: Michigan United States USA
Date: 1921
Duration: 3 min 24 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058838
A steel drill being hammered repeatedly during its processing at a factory in the United States.

The various types of drills and bits used for drilling into rocks in the United States. Men work on a drill steel heating furnace and sharpener as they prepare the drill steel by repeated hammer blows. The drill steel being hammered repeatedly. A man inserts a sharpener into the steel as they prepare it for auger drill.

Location: United States USA
Date: 1921
Duration: 2 min 1 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058839
Miners use explosives to extract ore and collected ore being transported in a silver mine in Ontario, Canada.

'Silver mining in Ontario ' about mining operations in silver mines in Ontario, Canada. Silver mines in Northern Ontario, Canada. Miners line up as they enter a lift that takes them 400 feet underground to a mine. A man at a throttle as he pulls it. Miners conduct drilling in the underground mine. A miner drills into the roof of the mine. Rocks being blasted with an explosive. Pieces of rock after the blast. A worker with a mine helmet with a torch in front. A miner drills into the rocks to extract silver. Timber being used to support broken ores after the blast. Ore being drawn out by a man as he empties it out in a container car. Men push around the cars. An electric engine pulls the cars to a central station.

Location: Ontario Canada
Date: 1920
Duration: 4 min 42 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058840
Extracted ore of silver is transported, crushed and washed to remove impurities in Ontario, Canada.

Mining and processing operations in silver mines in Ontario, Canada. Extracted ore of silver being elevated up from underground mines to the surface. The ore being poured out in a container for crushing. The ore being transported along cables in cars to mill storage bins. It is checked for size. Coarser ore moves along a belt and the high grade ore being separated from that of the low grade. High grade ore being emptied out in a container and then being crushed by machines as workers look on. Water being released as ore is washed to remove impurities.

Location: Ontario Canada
Date: 1920
Duration: 3 min 24 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058841
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