Anthracite iron combined those experiments and the new hot blast processing. In the United States, where the Lehigh Coal & Navigation Company (LC&N) had begun shipping anthracite to Philadelphia in 1820 because the principles could not obtain sufficient fuels for their iron works at "the 'Falls of the Schuylkill' "—so had built the Lehigh Canal and taken over the works of the haphazard Lehigh Coal Mine Company—by the late 1820s having established works that were running smoothly, after building America's second operating railroad in 1827, they'd great interest in exploiting the great anthracite deposits of Schuylkill County for ironmaking, which mills foundries
Anthracite iron States, in the principal control and supervision of Ironmaster David Thomas who had begun experimenting with attempts to use locally available Wales anthracite deposits as early as 1820 soon after he became in charge at Yniscedewin Iron Works in Wales. About this 1837-38 timeframe experiments were also being made in Pennsylvania near Port Carbon, and in Mauch Chunk, but with overall better success than in Wales. White, Hazard and the LC&N Co. had begun systematic experiments to smelt using anthracite in two furnaces in Mauch Chunk in 1832-1837 with intermittent but sporadically improved successes using cold blast processes with two