一、吉林敦化局黄泥河办事处第四国营林(?)采伐工人刘云发,使用弯把锯伐木,于十月十四日以九小时四十分钟,伐木451M~3的全国最高纪录。他主要是在操作技术上作了以下改进:(1)改进了锉锯法,将弯把锯由原1.6公分的卧仓改成了三公分深,针叶树锉麦芒尖,大爬楞和阔叶锉平头的方法,并且实行了“料齐、尖齐、仓齐,锉身齐”四齐锉锯法,在操作方法 I. The fourth state-owned forest (?) Harvesting worker Liu Yunfa of the Dunhuang Administration of Huangni River, Dunhua Bureau of Jilin Province, harnesses lumbering saws and logs the highest national record of 451M ~ 3 at nine hours and forty minutes on October 14. He mainly made the following improvements in operation techniques: (1) improved the file saw method, changing the saw from the original 1.6 cm to a depth of three centimeters, the coniferous file filet tip, the big flute and the broad leaf File flat head method, and the implementation of “Qi Qi, sharp Qi, warehouse Qi, file body Qi ” Si Qi file saw method, in the operation method