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Samuel Calvin McLanahan, a Pit & Quarry Hall of Fame inductee, is also enshrined in the National Mining Hall of Fame. McLanahan invented the logwasher in 1882 and the single-roll crusher in 1894. Photo: P&Q Staff
Samuel Calvin McLanahan, a Pit & Quarry Hall of Fame inductee, is also enshrined in the National Mining Hall of Fame. McLanahan invented the logwasher in 1882 and the single-roll crusher in 1894. Photo: P&Q Staff