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井径三矿在抚顺煤研所等单位帮助下研制的PSKZ-1型矿用声控自动喷雾装置,在开滦、峰峰、邢台煤矿进行了工业性试验,并于9月中旬通过了技术鉴定,
The mine shaft type PSKZ-1 mining sound-controlled automatic spray device developed by the well diameter mine in the help of Fushun Coal Research Institute and other units was tested in Kailuan, Fengfeng and Xingtai coal mines and passed technical appraisal in mid-September ,