explosion due to imported coal in coal mill
Coal Culture Timeline Coal Culture Projects Special Collections . 1819: The first coke blast furnace in the United States, the Bear Creek Furnace in Armstrong County, was designed and put into operation by Thomas C. , a Welsh ironworker who initially worked at Meason''s Plumstock mill. 1835: Broad Top coal in Huntingdon County is coked and used in the Mary Ann Furnace owned