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10 photos
Shift change at the Orange-Nassau III-mine at Heerlen,Netherlands,1951.
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Shift change at the Orange-Nassau III-mine at Heerlen,Netherlands,1951.

Although there is little danger from gas in Dutch mines regular training with gas masks is done at the Orange- Nassau-mine in Heerlen,Netherlands.
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Although there is little danger from gas in Dutch mines regular training with ga...

At the large mine Orange-Nassau I in Heerlen, Netherlands, men have to walk to work through narrow roadways.
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At the large mine Orange-Nassau I in Heerlen, Netherlands, men have to...

The coal plough at the Orange Nassau III mine is pressed against the coal face by cylinders of compressed air.
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The coal plough at the Orange Nassau III mine is pressed against the coal...

Steel props are set in one of the low,40cm high seams of the Orange-Naussau mine in Heerlen,Netherlands.
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Steel props are set in one of the low,40cm high seams of the Orange-Naussau mi...

This is one of the difficult 40 cm-seams in Orange- Nassau III mine at Heerlen,Netherlands.Miners have to drill coal either lying down or crouched over.The coal is carried away by a floor-conveyor,which saves shovelling.
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This is one of the difficult 40 cm-seams in Orange- Nassau III mine at Heerl...

This Dutch coal-plough moves along the coalface at the Orange-Nassau III mine at Heerlen,Netherlands. The coal is dropped via chute onto the double chain conveyor.
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This Dutch coal-plough moves along the coalface at the Orange-Nassau III mi...

This miner,working in a seem no more than 15 inches high,uses his feet to push coal onto a conveyor belt. Orange-Nassau mine,Heerlen,Netherlands.
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This miner,working in a seem no more than 15 inches high,uses his feet to pu...

Dust rises in a low seam at the Orange-Nassau I mine at Heerlen,Netherlands, as a miner drills with a pneumatic pick.Steel props and caps are necessary in the 40 cm-high seams because the roofs are weak.
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Dust rises in a low seam at the Orange-Nassau I mine at Heerlen,Netherlands,...

The Orange-Nassau IV mine has a costly water problem. The small torrent shown here gushes forth at a pressure of 11 atmospheres and would soon float the surrounding roadways but for constant pumping.
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The Orange-Nassau IV mine has a costly water problem. The small torrent shown...