Samuel T. Wellman
...that Samuel T. Wellman built the first commercially successful open hearth furnace in the United States?
...that <b id="mwDKY"><a href="./Samuel_T._Wellman" id="mwDKc" rel="mw:WikiLink" title="Samuel T. Wellman">Samuel T. Wellman</a></b> built the first commercially successful <a href="./Open_hearth_furnace" id="mwDKg" rel="mw:WikiLink" title="Open hearth furnace">open hearth furnace</a> in the <a href="./United_States" id="mwDKk" rel="mw:WikiLink" title="United States">United States</a>?