Abstract
Kamaishi Mine is the only iron mine in Japan, and after the discovery of copper deposits, it also became well known as a distinguished copper mine, which is one of the typical pyrometasomatic are deposits in Japan. The annual output of total crude ore is about 900, 000 tons (wet). Sub-level stoping method is mainly adopted and both of room & pillar stoping method and cut & fill stoping method is also. Because of expansion of the track-less mining system, there are many self-moving equipments, those are Jumbos, L.H.D.s. dumptrucks, jeeps, etc. AN-F0 explosives usually are used for blasting of tunnelling and stopping. The main haulage is carried out by a 15 t trolley locomotive with radio control and twenty 12 t Granby-cars. Almost all amount of underground water is drained by gravity through the main levels. Because of many inlets and outlets of air, there are strong natural air flows in the mine. But many local fans provide fresh air in order to keep good condition. Today, the mine has many subjects to solve. The important one of those subjects is the recovery of the remaining pillars and the support of mined area.
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