中南地質局464隊机掘峒探唐美田小組已於1956年2月6日向全國机掘峒探單位提出開展社会主義競賽的倡議書。他們提出以一台風鑽(台月進尺180公尺)完成兩台風鑽的任務(360公尺),在6—8級岩石中掘進,保証台月進尺達到400公尺的指標。唐美田小組在實際台月進尺達到336公尺的基礎上,以一台風鑽台月進尺400公尺的效率指標,向各工業部門 South China Bureau of Geology 464 team dig Tang Tangmei Tian team has February 6, 1956 to the National Machine dig exploration units proposed initiative to carry out socialist competition. They proposed the task of completing two typhoons (360 meters) with a typhoon (180 meters in Taiwan) and drilling in 6-8 rocks to ensure that the footage reached 400 meters. On the basis of the actual footage footage reached 336 meters, Tang Meitian Group used a typhoon to measure the efficiency index of 400 meters on a monthly basis to various industrial departments