A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is
Principal Records Clerk BARBARA A. SEMERAU, Senior Records Clerk COVER: The era of colossal midwestem excavating machinery culminated in the construction of Big Muskie, a 220-cubic-yard dragline used in Ohio. (See the discussion on p. 25.) The photograph was published in 1969 (Coal Age, v. 74, no. 12, p. 51) and has been retouched and artistically enhanced by Wilbur E. Stalions.doi:10.5967/36vj-m898 fatcat:xvkekrkevffixiilvxibz7qfgy