Silver Mines
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Sinopsis
It was called the "mother lode", a deposit of silver so massive that it would produce $300-million in its first 25 years of operation, establish Nevada as a state, and bankroll the Union Army in the Civil War. Named after an early investor, we'll see how the Comstock Lode, discovered near Virginia City, proved to be a scientific laboratory from which vast improvements in mining technology and safety were pioneered, including innovations in drilling, ventilation, drainage, and ore processing.
S03E01
44 min
Space Shuttle
20 ago. 1995
S03E02
44 min
Brooklyn Bridge
1 oct. 1995
S03E03
44 min
Tunnels
8 oct. 1995
S03E04
44 min
Tennessee Valley Authority
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S03E05
44 min
Oil
16 oct. 1995
S03E06
44 min
Silver Mines
1 oct. 1995
S03E07
44 min
The NYC Subway
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S03E08
44 min
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S03E12
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