A BGS photo from 1975 shows the quarry faces still visible and a general mess.
The quarry now is virtually unrecognisable as its has been landscaped and converted into parkland.
One possible remnant is a cairn of stones erected by the entrance, to my non-geologist eyes the majority looks like sandstone, but I think the larger grey block could be whinstone.
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The entire area is now a very attractive nature reserve, i have now found and re aranged into i hope interesting features some large whinstone boulders, all of which attract a small magnet, they can be found to the right as you enter the plantation.
This section of the Cleveland dyke is different to any other out crops ive studied, the magnetic content is far higher !