Two reports : on the coal lands, mines and improvements of the Dauphin and Susquehanna Coal Company and of the geological examinations, present condition and prospects of the Stony Creek Coal Estate in the townships of Jackson, Rush, and Middle Paxtang, in the county of Dauphin, and of East Hanover Township, in the county of Lebanon, Pennsylvania : with an appendix, containing numerous tables and statistical information, and various maps, sections, and diagrams, chiefly in illustration of coal and iron /