What is The Tolerance Zone? Watch this short video to find out.
What should you do in the unlikely event you hit an underground facility?
This short video provides some examples of what underground lines look like - and what you should be looking for when excavating.
Excavators: Please mark your proposed excavation site in white before dialing 8-1-1. Here's why.
Are you responsible for marking the location of underground lines? This short video reminds you of the four components needed to correctly identify an underground line.
Videos from Pennsylvania One Call System, Inc. ("Pennsylvania 811") on a variety of underground excavation topics.
More stuff from “Pennsylvania 811”
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