スリメダン鉱山における露天採掘
1960 年 76 巻 868 号 p. 690-694
詳細
1960 年 76 巻 868 号 p. 690-694
Sri Medan iron Mine is situated in Johore State, Malaya. This mine is discovered by Mr. K. Ishihara in 1919 and out put amounted to about 10 million tons during the years from 1919 to 1941.
On account of the World War II, the mine was closed in 1941. However, its bauxite ore was mined on a small scale by the Japanese Army.
In 1952, the mine was reopened, and since then, its products have been sold to the Japanese Mills.
The deposits are composed of primary and secondary ore made up chiefly of hematite.
Owing to the under mentioned conditions, the opeu pit mining method has to be adopted,
(a) Lack of skillful mining laboures.
(b) The mechanization is easy and high efficiency can be expected.
(c) High extraction of ore can be expected.
