Mine find
I believe the answer is:
ore
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">mine find</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ore that I've seen before include "Metal-bearing rock or mineral" , "Mineral - Scandinavian money" , "store of value" , "Mineral or metal source" , "Natural material from which metals can be extracted" .)