Black Thunder Coal Mine, WY, USA

The Thunder thermal coal mine located Southern Powder Basin Wyoming opened 1977 years largest single coal operation US. Having relegated second-largest Peabody's Antelope-Rochelle operation Powder Basin 2004 Thunder became nation's leading coal-producer following Arch Coal's acquisition neighbouring Rochelle mine Triton Coal Co.

SBM VSI5X Impact Crusher, VSI Impact Crusher, PE Jaw Crusher, JCE Jaw Crusher

The combined operation producing coal rate around 91Mt/y equivalent 10% total coal production. 2004 Thunder became coal mine cumulative 1,000Mst (907Mt) its 27-year date.

Construction Thunder 1976 installation crushing conveying sampling high-speed train-loading systems. processes computer controlled including precision loadout systems hi-tech near-pit conveying system installed 1989.

SBM VSI Impact Crusher, PE Jaw Crusher, JCE Jaw Crusher, Symons Cone Crusher

Until 1998 Thunder owned operated ARCO Coal Atlantic Richfield group. owned Arch Coal second-largest coal miner US bought property following ARCO's withdrawal coal market.

Geology reserves

Black Thunder works coal reserves Wyodak seam. Hosted palaeocene Fort Union formation covers vast areas Wyoming Montana Dakotas seam Thunder gently dipping 22m thick locally splits into Anderson Canyon beds separated 18m waste. 2004 Arch successfully bid $611m rights mine neighbouring Thunder reserves 650mt recoverable coal increasing property’s reserves 1,370mt-plus.

Coal quality

The mine produces low-sulphur sub-bituminous coal suitable station fuel without preparation except crushing. Thunder coal heating value 20.3MJ/kg ash contents around 5% as-received moisture 25–30%. moisture content Powder Basin coals increases reactivity extent spontaneous combustion not properly handled.

Mining shipment

Black Thunder operates individual pits within its enlarged concession area using draglines overburden handling. dragline fleet includes Ursa Major largest three Bucyrus-Erie (B-E) 2570WS model weighing 6,700t. third-largest dragline built assembled site three-year period cost $50m.

SBM PE Jaw Crusher, JCE Jaw Crusher, Symons Cone Crusher, Hydraulic Cone Crusher

Its 110m-long boom carries 122m³ bucket. draglines Thor B-E 1570W 97.5m boom 69m³ bucket Walking Stick B-E 1300W 92m boom 34m³ bucket. Originally built Coal Creek another Arch Coal property production halted 2000 tramped across prairie Thunder 1991.

"At beginning 2006 Arch Coal Peabody Energy undertook swap reserve infrastructure assets enabled companies optimise future operations."

Arch planned resume production Coal Creek 2006 response increased market demand cost $50m including re-assembly dragline moved company’s operations Western USA.

SBM JCE Jaw Crusher, Symons Cone Crusher, Hydraulic Cone Crusher, Spring Cone Crusher

Around 15–75m overburden stripped topsoil stored restoration. Thunder relies heavily cast blasting 20 30% overburden its position directly. remainder handled draglines. coal blasted loading.

The coaling fleet consists P&H 2800 electric shovels Marion 351-M. Coal haulage carried fleet Liebherr T-262 (218t-capacity) Komatsu 930E (290t) haul trucks mine Liebherr T-282 (360t-capacity) TI-272 (290t) trucks evaluation.

SBM Symons Cone Crusher, Hydraulic Cone Crusher, Spring Cone Crusher, Jaw Crusher Mobile Crusher

Coal hauled near-pit dump crusher station feeds 3.5km-long overland conveyor coal storage loadout silos.

Black Thunder's 12,700t silos 82,000t slot storage system feed twin rail loadouts capacities 4,100t/h 10,800t/h. Burlington Northern Union Pacific rail systems service operation.

At beginning 2006 Arch Coal Peabody Energy undertook swap reserve infrastructure assets enabled companies optimise future operations. Arch’s case resulted sale rail spur loadout facility company using proceeds rail spur loadout its Thunder Creek reserves future operations focused.

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