David Thomas (masanin masana'antu)

David Thomas (Nuwamba 3, 1794 - Yuni 20, 1882) ɗan asalin Wales ne wanda ya kasance mai tasiri a haihuwar Juyin Juya Halin Masana'antu a Amurka.

 Ci gaban fashewar zafi 
An haifi David Thomas a Neath_Port_Talbot" id="mwFA" rel="mw:WikiLink" title="Cadoxton, Neath Port Talbot">Cadoxton, kusa da Neath .  Ya tafi makaranta a kusa da Alltwen da Neath, kuma ya yi aiki a gonar mahaifinsa kafin ya shiga masana'antar ƙarfe. Ya auri Elizabeth Hopkins a shekara ta 1817. 

Yayinda ya girma, an dauke shi a matsayin daya daga cikin manyan masanan ƙarfe a Ƙasar Ingila. Ya kasance yayin da yake aiki a Yniscedwyn Works, a Ystradgynlais a cikin Kwarin Swansea, cewa ya tsara tsarin da zai ci gaba da Juyin Juya Halin Masana'antu. A ranar 5 ga Fabrairu, 1837, Thomas ya yi amfani da fashewar zafi don narkar da ƙarfe da kwal. Sakamakon ya kasance hanya mai sauƙi don samar da ƙarfe na anthracite, wanda ya sauya masana'antu a cikin kwarin Swansea. Edward Martin na Morriston, Wales ne ya ba da izinin wannan nau'in ƙarfe a cikin 1804.

 Shige da fice zuwa Pennsylvania 
Thomas da ɗansa, Samuel, sun shiga cikin al'ummar jarirai na Catasauqua, Pennsylvania, a kan hanyar Lehigh Coal da Navigation Company a ranar 9 ga Yuli, 1839. Kasa da shekara guda bayan haka, a ranar 4 ga Yuli, 1840, murhun ƙarfe na farko da ya yi nasara a Amurka ya fara aiki.

Ayyukan ƙarfe na Thomas sun yi nasara sosai, duk da cewa masana'antar ƙarfe a sauran kwarin Lehigh ta fara raguwa. An kafa kamfanin a cikin 1839 a matsayin Kamfanin Lehigh Crane Iron, kuma a cikin 1872 an canza sunan zuwa Kamfanin Crane Iron. A wannan lokacin ba a san al'ummar da Craneville ba, amma da Catasauqua;  Thomas ya sanya sunan kamfaninsa da garin da ya kafa shi bayan tsohon ma'aikacinsa a Wales.

An yi amfani da ƙarfe da aka samar a Kamfanin Crane Iron a cikin samfuran da yawa, da yawa daga cikinsu an yi su a wasu wurare a Catasauqua. Kamfanin makwabta na John Fritz's Iron Foundry ya yi amfani da ƙarfe na Crane don gina ginshiƙan ginin ƙarfe na farko na Amurka, yayin da Davies da Thomas Foundry da ke kusa suka juya ƙarfe na crane zuwa bututu da bututun rami. Daga cikin gine-ginen da ke akwai waɗanda aka kirkira ta amfani da ƙarfe na Crane sune Holland da Lincoln Tunnels a Birnin New York.

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