While building a log home, a worker lifted a log with an excavator. While in the air, the log accidentally swung against the boom cylinders. The worker leaned out the boom side window, which had been removed for better visibility, to push the log free. He accidentally leaned against the boom control lever. This triggered the boom so that it dropped down, crushing the worker in the pinch point between the boom and the cylinders.

Prevention alert:

Never intentionally remove a safeguard — such as the side window — that is designed to protect you.