Stamp mills
...that Stamp mills, first used during the Renaissance in such diverse industries as paper making, oil-seed processing, and ore refining, work to crush their material by repeatedly dropping heavy weights on them?
...that <b id="mwAvU"><a href="./Stamp_mill" id="mwAvY" rel="mw:WikiLink" title="Stamp mill">Stamp mills</a></b>, first used during the <a href="./Renaissance" id="mwAvc" rel="mw:WikiLink" title="Renaissance">Renaissance</a> in such diverse industries as <a href="./Paper" id="mwAvg" rel="mw:WikiLink" title="Paper">paper making</a>, <a href="./Cooking_oil" id="mwAvk" rel="mw:WikiLink" title="Cooking oil">oil-seed</a> processing, and <a href="./Ore" id="mwAvo" rel="mw:WikiLink" title="Ore">ore</a> refining, work to crush their material by repeatedly dropping heavy weights on them?