Talk:Skill/@comment-24726641-20190812024056/@comment-38109392-20190812025335

The Chainsaw isn't affected by Mastery of Pickaxe (neither is the Mini-Drill).

Expert Electrician only increases the damage you do to trees and rocks/ores with the Chainsaw and Mini-drill, respectively. It does not directly affect their stamina consumption, though it will make them mine faster, thus making their stamina consumption more efficient.