炭鉱保安統計からの2, 3の考察
1987 年 103 巻 1188 号 p. 97-100
詳細
1987 年 103 巻 1188 号 p. 97-100
In recent years many serious accidents have occured in Japanese coal mines. Because of these accidents, it is generally believedthat the working place in a coal mine, especially in Japanese coal mine, is very dangerous one. To clarify the safety performance in Japanese coal mine quantitatively, comparative analysis of coal mine safety statistics of Japan with that of other countries was carried out. This study gaye the following results.
1. The rate of fatal accidents in Japanese coal mine per year is about 0.5 per 1 million working hours. This value is higher than those of European countries and U.S.A.
2. The rate of accidents in Japanese coal mines is far less than that of West Germany.Moreover, a new method for statistical approach using equation (4) was proposed.
