第九届世界采矿大会于一九七六年五月二十四日至五月二十八日在西德杜赛尔多夫市召开。参加这次大会的国家六十个,代表约一千八百人。有二十七个国家提交了报告,共计一百篇。我国以国家采矿委员会副主任、煤炭科学院院长贺炳章同志为团长的代表团,一行十三人出席了这次大会,提交并在会上宣读了三篇报告,即“江南煤炭工业的蓬勃发展”、“斜井快速掘进”和“水 The Ninth World Mining Conference was held in Düsseldorf, West Germany, from May 24 to May 28, Sixty countries attended the conference, representing about 1,800 people. Twenty-seven countries submitted their reports for a total of 100 articles. Our delegation, headed by Comrade He Bingzhang, deputy director of the State Mining Commission and head of the Coal Science Academy, attended the conference. Thirteen people attended the conference and submitted three reports at the conference, namely: ”the prosperity of the coal industry in southern China Development “, ” Inclined rapid drilling “and ” water