Pile Driver Gregory is operated by professional Pile Drivers that have over 30 years experience. Eldon Gregory owner says. In the last three-quarters of a century a lot has changed - technology, governments, world economies, the materials we use in our daily lives. But, one things remains unchanged - our dedication to doing the best work in the world. We keep an old fashioned attitude about work, and that's that it needs to be done when we promised. More and more, that means relying on brilliant engineers and hardworking craftsmen working in tandem.