小坂鉱山, 内の岱東鉱床の坑内探鉱と探査業務

抄録

The Uchinotai are deposits were discovered in 1959 by drilling prospecting. They are typical “Kuroko” deposits and cosist of Eastern and Western Deposit.
The development began in January, 1960 and the mining operation was started in July, 1962.
Since the begining of development, a systematic and detailed underground geological survey was carried out and it has been made clear the features of geological and mineralogical occurrence, mainly the evidence of volcanic activity.
These geological and mineralogical informations are very useful in the future prospecting and also the operation planning for more stabilized form.