Dumpster at jobsite

Question: am I trespassing or breaking some law if I get stuff out of a work dumpster from a job site?

I found a dumpster full of tin/steel ceiling tiles along with a bunch of wire, ceiling fans, and some other misc. stuff. Got our pickup bed pretty full before the cook (it's a restaurant remodeling) came out and asked us to leave. There's still at least another full load left, but I'm pretty conscientious of obeying laws and don't want any trouble. The dumpster is right by the sidewalk and is accessible from the road without going into the parking lot.

Suggestions? Leave it? Come back at off hours?

Thanks.

Find the contractor who is doing the remodel and ask for permission.

and go introduce yourself.

What if the contractor was recycling that himself, to help keep remodel costs down? You basically pulled food from his familys mouths. Ask before you take, especially large quantities like that

Always, always, always ask first or it constitutes "theft by unauthorized taking".