Roman glass industry
...that systematic recycling of broken glass was a common practice in the Roman glass industry ?
...that systematic <a href="./Glass_recycling" id="mwBtE" rel="mw:WikiLink" title="Glass recycling">recycling</a> of broken <a href="./Glass" id="mwBtI" rel="mw:WikiLink" title="Glass">glass</a> was a common practice in the <b id="mwBtM"><a href="./Roman_glass" id="mwBtQ" rel="mw:WikiLink" title="Roman glass">Roman glass industry</a></b> <i id="mwBtU">(example pictured)</i>?