People often use “dig” and “excavation” as if they mean the same thing. In the oil tank world they are different jobs, with different goals, different rules and very different cost and disruption. The goal of each An exploratory dig answers one question: what is this signal? It opens a small area to identify an […]
If a sweep has flagged a spot in your yard, an exploratory dig is the way to find out what is there. Here is what the visit usually looks like, so nothing about it is a surprise. Before anyone digs The location comes from the sweep, which marks the signal on the ground. Before opening […]
A tank sweep is a search. It can tell you that something under the lawn behaves the way a tank would. It cannot tell you what that something is. That last step belongs to an exploratory dig. Why a signal is not an answer Metal detection and ground penetrating radar respond to what is buried, […]