“…Korea has deposits of some nonmetallic minerals such as feldspar, limestone, siliceous earth, quartz sand, sulfur, serpentine, talc, and zeolite; however, it has limited domestic deposits of rare metals such as titanium, molybdenum, tungsten, tin, vanadium, and lithium [11,13]. In contrast, it is established that North Korea possesses abundant underground resources including coal, copper, fluorspar, gold, graphite, iron ore, lead, magnesium, rare earth elements, silver, tungsten, and zinc.…”