This was really good. I love the sound of a building part being deleted, it was very satisfying for some reason.
Personally I think the game was very intuitive to play and it didn't take more than a few seconds to start swinging my pick like a madman.
My only suggestion is that the music is a bit intense and this feels to me like a great "relaxing" style clicker game where a more laid back music might fit better.
Great job!