Keystone Cops' initial material, worth mining (4)

While searching our database we found 1 possible solution for the: Keystone Cops' initial material, worth mining (4) crossword clue. This crossword clue was last seen on 13 October 2021 The Guardian Cryptic Crossword puzzle. The solution we have for Keystone Cops' initial material, worth mining (4) has a total of 4 letters.

Answer

1C
2O
3R
4E

If you have already solved this crossword clue and are looking for the main post then head over to The Guardian Cryptic Crossword 13 October 2021 Answers