Iron Mountain Mine
...that mine drainage from the Iron Mountain Mine toxic waste site in Northern California was measured to have a pH of -3.6?
...that <a href="./Acid_mine_drainage" id="mwD4I" rel="mw:WikiLink" title="Acid mine drainage">mine drainage</a> from the <b id="mwD4M"><a href="./Iron_Mountain_Mine" id="mwD4Q" rel="mw:WikiLink" title="Iron Mountain Mine">Iron Mountain Mine</a></b> toxic waste site in <a href="./Northern_California" id="mwD4U" rel="mw:WikiLink" title="Northern California">Northern California</a> was measured to have a <a href="./PH" id="mwD4Y" rel="mw:WikiLink" title="PH">pH</a> of -3.6?