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Opencast mining

  • Colnect-4609-043-Opencast-mining.jpg
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Short desc: Opencast mining




This design is used by 2 stamps: (See all uses as list)
China, PRC 12/29/1978 10f issue=Mining Development perf=11x11.25
Zimbabwe 1/17/1995 40c issue=1995 dt=Zimbabwe culture perf=14