Pit (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(mining pit)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for mine that I've seen before include "I made?" , "Coalpit" , "Pit; explosive device" , "Excavate for minerals" , "Explosive device concealed in ground" .)
(Other definitions for sump that I've seen before include "oil well?" , "Engine's oil reservoir" , "Into which liquids drain" , "Engine oil reservoir" , "It receives the engine oil" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for colliery that I've seen before include "Coalmine and surrounding buildings" , "Pit" , "Grimethorpe?" , "Coal mine" , "Coal-mining establishment" .)
(Another definition for coalmine that I've seen is " Colliery".)