Generally, excavators or other heavy equipment are used as a means of constructing a building, digging soil and other jobs. But it turns out that that's not all they can do, for example, like the action of an excavator going up to the top of this tower, guys! It's really cool! Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.