United Cavers Exploration Team

Big garden clear out and I have some new offcuts of corrugated zinc sheet. Not big enough to do anything useful with as regards garden shed use, but before I do a scrap metal run, I seem to recall that these are used in digs. What is the smallest size that is useful?

I have a few pieces that are around 1metre wide (as in, across the corrugations) by 0.6 metre long, and sizes upwards of that... can shove them in car next time I'm up if they are any use.

Phil

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