This is a link to the Crucible website: http://thecrucible.org/
Resources and references:
http://en.wikipedia.org/wiki/The_Crucible_%28arts_education_center%29
https://oaklandliving.wordpress.com/2007/07/22/fire-arts-festival/
http://www.yelp.com/biz/the-crucible-oakland
https://www.facebook.com/pages/The-Crucible/154781257481
https://twitter.com/thecrucible
http://www.artofmanliness.com/2011/07/14/blacksmithing-primer/
http://www.weldinginfocenter.org/
http://oaklandnorth.net/2014/03/23/west-oakland-fired-up-at-the-crucible-draft/