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南江县水马门铁矿是生产矿石的小型企业,现有职工48人(男44人,女4人),年产矿石6.000吨。该矿于1970年建成、土法开采(钢钎、二锤干打眼),工人劳动强度大。1975年开始使用机械风钻采矿,无防尘设备,防护条件差。为了降低粉尘浓度,他们采取了防护措施,与兄弟单位协作,采用五毫米钢板制成容积为2立方米的气压水箱,水箱耐压强度为5公斤平方厘米,水箱上设进风管、进水管、自动排气阀和出水管。水箱就地取水,借风管内的高压风把水压入空心钻杆内进行湿法采矿。已坚持使用8年。本站自1974年以来,对该矿进行了5次卫生学调查以及对部份工人进行了体检;1983年8月按计划又对该矿作业环境和在40名接尘工人中进行了调查。现报告如下。
Nanjiang County water horse iron ore mine is the production of small businesses, the existing staff of 48 people (44 men and 4 women), with an annual output of 6.000 tons of ore. The mine was completed in 1970, indigenous mining (drill, two hammer dry eye), workers labor-intensive. 1975 began using mechanical drill mining, dust-free equipment, poor protection conditions. In order to reduce the concentration of dust, they took protective measures, in collaboration with the brothers unit, the use of five millimeter steel plate to create a volume of 2 cubic meters of pressure tank, water tank compressive strength of 5 kg square centimeter, the tank is equipped with air duct, , Automatic exhaust valve and outlet pipe. Water tank on the spot to take water, high-pressure air through the duct pressure into the hollow drill pipe for wet mining. Has insisted on the use of 8 years. Since 1974, this site has carried out five hygiene surveys and some medical examinations on the mine. In August 1983, it conducted an investigation into the operating environment of the mine and of 40 dust-pick workers as planned. The report is as follows.