Esmeralda mine table
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Mine name
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La Esmeralda
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Location
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Northern Mexico in the State of Coahuila
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Owner
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Minerales Monclova S.A. de C.V.
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Geology overview
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Depth of cover 280 - 350 Meter
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Seam
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Seam height 2.5 meters Cutting height 2.20 meter
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Latest production figures
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For 2002/2003 1,327 Ktons Year to date October 728.5 Ktons
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Date longwall mining started
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September 1999
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Longwall block dimensions
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Panel Width: 200 meters Length: 1,000 meter average
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Shearer
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Model JOY 4LS10 Drum diameter: 1400 mm M/G, 1400mmT/G Installed power: 4160 volts
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Roof supports
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2-leg DBT shields, number: 137 Yield load 500 tons Working range: 1.10 to 3.0 meters Control: Electro-hydraulic
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Face conveyor
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Model: MTA PF4-932-AI1505 Width/chain size: 900 mm, 34mm chain Chain speed and manufacturer: 1.25 m/s Motors MORLEY 375 KW
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BSL and crusher
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Model: MTA TR-015 Crusher: DBT QD-00115K9800LM Clearance: conveyor 9 inches
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Strata Control
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Number/type of roof bolts: none. Using wooden props and I-beams
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Development equipment
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Spacing: Typically, 1m
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Shifts
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Daily hours worked: 3 x 8 Hours shifts/day number of employees: 584 Workers 53 Salary
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