添加了一款可以进行采矿工作的轻型机械体，以方便没有掘进机时期的采矿工作，工作效率进行了调整
Added a light mechanic that can perform mining [url=https://steamcommunity.com/linkfilter/?u=http%3A%2F%2Fwork.In]work.In[/url] order to facilitate the mining work during the period without tunneler, the work efficiency has been adjusted.
