Mezue ahịrịokwu na-esonụ: Ngwuputa ahụ na-emepụta coal maka ahịa ụlọ ọrụ mmepụta ihe, na-enye coal coking, gas coal, coal na-emepụta ihe na steam coal. N'oge na-adịghị anya mgbe e meghere ya, e nwere mmetụta nke
ndị na-egwupụta akụ na ụba nke 1926, mana nrụpụta maliteghachiri mgbe nke ahụ gasịrị. Ka ọ na-erule afọ 1938, Firbeck Main Collieries Ltd nke Chesterfield, nke were ndị ọrụ 1,457 n'okpuru ala na ndị ọrụ 357 n'elu ala. Mgbe e mere ya mba na 1946, ọ ghọrọ akụkụ nke National Coal Board's No.1 Workshop area. N'afọ 1953, mgbe a na-egwute ọlaedo n'ebe ahụ, e nwere otu puku ndị ọrụ na narị anọ na iri anọ na asatọ na-arụ ọrụ n'ime ala, nweekwa narị atọ na iri itoolu na atọ na-arụ ọrụ n'elu ala. Nsogbu malitere nke nta nke nta, ebe ọ bụ na mmiri, nsogbu ikuku na mmebi ala na-emetụta ebe a na-egwupụta ihe. Ụgbọ njem nke coal na elu dị nwayọ, ebe ọ bụ na oghere ndị ahụ adịghị mma maka nrụnye igwe na-agafe agafe, na site na 1968, a na-ewere ebe a na-egwupụta akụ na ụba dị ka akụ na ụba. E mechiri ya na 31 Disemba 1968, ọtụtụ ndị na-egwuputa ihe kwagara n'olulu ndị ọzọ dị na Maltby, Manton, Shireoaks na Steetley.