3M™ EMS Mini-Markers provide an accurate, convenient, long-lasting method of marking underground facilities at depths of up to six feet (1.8 m) from marker to locator.
Mini-markers are ideally suited for marking the location of utilities buried at depths of 6 feet (1.8 meters). Mini-markers provide positive and accurate identification of underground wastewater lines, helping to reduce the risk of accidently excavating other buried facilities. Markers function without the need for an external power source. The marker spokes help stabilize it in the correct position after placement