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Fort Knox Gold Mine Electrical System is Immense
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The $250 million Fort Knox Gold Mine Construction project has begun about 13
miles north of Fairbanks, Alaska. Major work in 1995 includes the building of
dams, roads, and foundations for the buildings and at least one building. The
mine covers an area about 8 square miles and will include 35 megawatts of
electrical machinery. A 12 year deposit of gold will be extracted from a
mountain of fractured granite. The granite will be drilled, blasted, and ground
in ball mills then processed through a cyanide leach process to remove
approximately 1000 ounces of gold each day. The mine is scheduled to go into
operation in October 1996 and will employ about 220 people. The electrical
system consists of the following:
Generators
- 3 each 1.6 Megawatts 5 KV
Transformers
- 2 each 40,000 KVA
- 1 each 15,000 KVA
- 1 each 12,500 KVA
- 2 each 7,500 KVA
- 1 each 3,000 KVA
- 8 each 2,000 KVA
- 2 each 1,500 KVA
- 1 each 1,000 KVA
- 3 each 500 KVA
- 1 each 300 KVA
- 1 each 225 KVA
- 5 each 112.5 KVA
Switchgear
- 1 each 3,000A 13.8 KV
- 1 each 600A 13.8 KV
- 1 each 2,000A 5KV
- 3 each 1,200A 5 KV
- 1 each 800A 5 KV
- 2 each 600A 5 KV
- 8 each 1,000A 480V
- 10 each 800A 480V
- 1 each 600A 208V
Motor Control Centers
Motors
5 Kilovolts
- 2 each 7,000 Hp
- 2 each 6,000 Hp
- 2 each 750 Hp
- 5 each 700 Hp
- 3 each 600 Hp
- 6 each 500 Hp
- 5 each 400 Hp
- 2 each 350 Hp
- 1 each 200 Hp
480 volts
- 1 each 350 Hp
- 1 each 300 Hp
- 1 each 150 Hp
- 6 each 135 Hp
- 18 each 125 Hp
- 1 each 100 Hp
- 177 each less than 100 Hp
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© 1996 Gerald Newton. All rights reserved.
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