Mack, Harry F. POCKETS FOR POWDER IN THE MINE. Etching with aquatint, not dated, but circa 1930s. Titled and signed "H. F. Mack" in pencil. 7 7/8 x 6 inches (plate), 10 3/4 x 9 1/4 inches (sheet). The title refers to workers drilling in rock in a mine to insert explosive powder. Likely a print done for the W.P.A. In excellent condition.
