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部于五月十日至十七日，在江西省地质局九○九队，召开了廿三个单位（包括局、队）参加的铵油炸药推广座谈会。交流推广了九○九队铵油炸药试点的经验。
From May 10 to 17, a total of 23 units (including bureaus and teams) participated in the promotion seminar of ammonium oil explosives at the 909 Jiangxi Provincial Geological Bureau. The exchange promoted the experience of the 1990 trial of ammonium explosives.