Harold H. Arndt Howard E. Rothrock Holly C. Wagner Boyd R. Haley 1953 <p>The Western Middle anthracite field is one of four structural basins containing anthracite in eastern Pennsylvania.&nbsp; This report describes the geology of the part of the Western Middle field that lies in the western half of the Ashland quadrangle.&nbsp; (See index map, sheet 2.)&nbsp; The mapped area covers about 19 square miles in Columbia and Schuylkill Counties.&nbsp; The town of Centralia is in the northern part of the area, and the town of Ashland is in the southern part.</p> application/pdf 10.3133/coal13 en U.S. Geological Survey Geology of anthracite in the western part of the Ashland quadrangle, Pennsylvania reports