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Photos by Jim Nieland > Holden Mine

1500 Level Portal, Holden Mine. The mine is currently undergoing analysis to determine the best way to treat acid mine runoff. When it closed in 1957, the mine had over 50 miles of underground workings, and nearly one mile of vertical extent. The Holden Mine was once the largest underground copper mine in the United States. The mine is closed to the public.

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Holden Village

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Holden Village Post Office/Store

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Holden Village

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Waste Dump 1100 level, Holden Mine

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Holden Mill, now partly disassembed. Ore from the mine was processed, and ore concentrates shipped first by truck down Railroad Creek to Lucerne. At Lucerne, ore was loaded on a barge destined for Chelan, where it was loaded onto rail cars for shipment to the Tacoma Smelter.

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Old snow cats, Holden Village

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Sign outside Holden Mine Museum

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Holden Mine, red slime, 1500 level. The water level has been lowered on the 1500 level as a part of environmental mitigation work. Iron oxide has precipitated from the water making a coating on the floor and lower walls.

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Safety Sign, Holden Mine, Shaft No. 1. Two shafts, one going up and the other down, depart from the 1500 hauling level. Over 1/2 mile of vertical workings were accessed by these shafts.

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Holden Mine Museum, historic sign

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Holden Mine, temperature monitoring, 300 level. The mine is monitored for temperatures suitable for bat hibernation or maternity roosts. If suitable habitat is found, closures will permit continued access for wildlife while keeping people out.

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Searching for evidence of bat use in the ventelator portal.

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Bat guano found on planks in the ventelator portal. Bat guano is quite distinctive and serves as an indicator of bat occupation, even when the animals are not present.

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Copper staining, 1100 level, Holden Mine.

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Photos by Jim Nieland > Holden Mine

Holden Village

Holden Village Post Office/Store

Holden Village

Waste Dump 1100 level, Holden Mine

Holden Mill, now partly disassembed. Ore from the mine was processed, and ore concentrates shipped first by truck down Railroad Creek to Lucerne. At Lucerne, ore was loaded on a barge destined for Chelan, where it was loaded onto rail cars for shipment to the Tacoma Smelter.

Old snow cats, Holden Village

Sign outside Holden Mine Museum

Holden Mine, red slime, 1500 level. The water level has been lowered on the 1500 level as a part of environmental mitigation work. Iron oxide has precipitated from the water making a coating on the floor and lower walls.

Safety Sign, Holden Mine, Shaft No. 1. Two shafts, one going up and the other down, depart from the 1500 hauling level. Over 1/2 mile of vertical workings were accessed by these shafts.

Holden Mine Museum, historic sign

Holden Mine, temperature monitoring, 300 level. The mine is monitored for temperatures suitable for bat hibernation or maternity roosts. If suitable habitat is found, closures will permit continued access for wildlife while keeping people out.

Searching for evidence of bat use in the ventelator portal.

Bat guano found on planks in the ventelator portal. Bat guano is quite distinctive and serves as an indicator of bat occupation, even when the animals are not present.

Copper staining, 1100 level, Holden Mine.

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