Mini-piles are usually produced from metal or concrete, and might be possibly drilled or pushed into the ground. Minipiles is often installed employing a variety of approaches, including: From Wired If it were "the big bucks" they ended up immediately after, then they'd be engineers, inventors and technologists. From Phys.Org https://codyqrpom.blogchaat.com/30284343/detailed-notes-on-engineer