Every DPT refusal scenario is different, which is why environmental consultants must understand the different types of refusals, options for overcoming them and when to consider hybrid drilling options.
At trade shows and in contractors’ offices, veterans talk a lot about the skills gap and the greying of the industry. Demo events, like one The Driller attended recently in Flint, Mich., can help.
When stuck between a rock and a hard place, I was determined to come up with a solution to penetrate very coarse alluvial gravels, where traditional split spoon and Shelby-tube sampling methods could not.