open-pittableとは 意味・読み方・使い方

形容詞

open-pittable (comparative more open-pittable, superlative most open-pittable)

1. Capable of being mined using the open-pit method. This refers to mineral deposits that are located relatively close to the surface of the Earth and can be economically extracted by removing the overlying rock and soil.
   • 1986, MI1985: The Nevada mineral industry 1985, NV Bureau of Mines & Geology, page 4:

     Preliminary testing, including 180 relatively shallow drill holes, indicates reserves of 20-million tons of open-pittable ore having an average grade of 0.9 oz. of gold per ton…

   • 1996, Warren Yeend, Gold Placers of the Historical Fortymile River Region, Alaska (U.S. Geological Survey Bulletin; 2125), Washington: United States Government Pringing Office, page 72:

     The USBM calculated an “open-pittable inferred resource of 200 million tons grading 0.4 percent Cu, 60 ppb Au, 7 ppm Ag, and 5 ppb platinum group metals” Neubert and others, 1992, p. 146).

   • 2025 January 26, Wikipedia contributors, “Canico Resource”, in English Wikipedia‎, Wikimedia Foundation:

     This is a large, high-grade, open-pittable deposit which is one of the world's best undeveloped nickel projects.