Narborough Railway Line
... that Great Eastern Railway engineers discovered chalk while digging the Narborough Railway Line?
... that <a href="./Great_Eastern_Railway" id="mwA78" rel="mw:WikiLink" title="Great Eastern Railway">Great Eastern Railway</a> engineers discovered chalk while digging the <b id="mwA8A"><a href="./Narborough_Railway_Line" id="mwA8E" rel="mw:WikiLink" title="Narborough Railway Line">Narborough Railway Line</a></b>?