Development of new bond release criteria for surface coal mines in the Eastern and Interior Coal Provinces of the United States.
By: W. M. Knuth, E. L. Fritz, J. A. Schad and W. F. Nagle.
Contributors: Fritz, E. L; Schad, J. A; Nagle, W. F
Publisher: s.n
Published: 1978
Place of publication: S.l
Notes: 13