Tyldesley Coal Company
... that the worst coal mining disaster in Tyldesley occurred at Yew Tree Colliery, which became part of the Tyldesley Coal Company in 1870?
... that the worst <a href="./Coal_mining" id="mwDNQ" rel="mw:WikiLink" title="Coal mining">coal mining</a> disaster in <a href="./Tyldesley" id="mwDNU" rel="mw:WikiLink" title="Tyldesley">Tyldesley</a> occurred at Yew Tree Colliery, which became part of the <b id="mwDNY"><a href="./Tyldesley_Coal_Company" id="mwDNc" rel="mw:WikiLink" title="Tyldesley Coal Company">Tyldesley Coal Company</a></b> in 1870?