锥探工作是一项重体力劳动,费力大工效不高。在技术革命运动高潮中,惠民修防段工人张玉德同志在党的大力支持下依靠群众,经过反复试验终于制成半机械化锥探机。半机械化锥探(?)三人操作同时可打二根锥,每工日可锥眼一百至一百五十个,锥进一千 Cone exploration work is a heavy manual labor, effort is not high efficiency. At the climax of the technical revolution movement, Comrade Zhang Yude, a worker in the Huimin revision defense section, relied on the masses with the vigorous support of the party and finally made a semi-mechanized conical exploration machine after repeated experiments. Semi-mechanized cone exploration (?) Three people can operate two cones at the same time, each day can be a hundred to one hundred and fifty cone, cone into a thousand