63 ASM NEWS The latest news about ASM members, chapters, events, awards, conferences, affiliates, and other Society activities. ARCHAEOMETALLURGICAL STUDY OF TWO ANCIENT COPPER COINS Patricia Silvana Carrizo and Peter Northover A scientific study of two copper coins from 1851 and 1853 reveals well-preserved symbols of a growing, newly independent Chile nation. 14 A D V A N C E D M A T E R I A L S & P R O C E S S E S | A P R I L 2 0 2 2 2 Indenter for Rockwell testing with calibration block. Courtesy of Kimtaro/dreamstime.com. On the Cover: 72 3D PRINTSHOP 3D-printed concrete using recycled glass, life-sized printed statues, and more are described in this issue. 6 MACHINE LEARNING Researchers are finding new ways to use machine learning for inspecting 3D-printed metal parts and testing bulk materials.
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