著者

重光 俊彦

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.82, no.941, pp.751-754, 1966-09-25 (Released:2011-07-13)

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At Chikubetsu Coal Mine, we have begun excavation of prospecting mine road about 1, 700 meters long, using Russian PK-3 heading machine since February, 1966.There are some difficulties in working, e. g. maintenance of PK-3's loop-feeder and transporting debris cars, we could perform heading of mine road in coal seam 20 meters per day.