that if you get any closer, you might get hurt...:-)
not sure if you are trying to capture the worker, or the machine..
the first one is a good idea, however, the lack of light inside the cabin makes it harder to discern the driver. otherwise, more light there and maybe a little more out of focus on light/windshield, and you might have had something good...then again...I am sitting at my desk, not shooting in the mud...
ur first pic is just too good i love the framing like the light on the operator facethe disturbing reflections,blurry foreground!all good. the third pic, i feel even with all that heavy metal all around that operator i think his face,expression,his personality,his body language has totally overpowered your image again as usual in the second pic....the operator cabin is well captured,no reflections,good exposure inside rest of the pic can be easily ignored