Magma can cool to form an igneous rock either on the surface of the Earth-in which case it produces a volcanic or extrusive igneous rock, or beneath the surface of the Earth, - in which case it produces a plutonic or intrusive igneous rock.
Applying for an EIN number is free of charge and can be completed online. I've linked the IRS area below where you'll learn more about the application process. http://www.irs.gov/businesses/small/arti...
The Internal Revenue Service does not provide a tax-exempt number. A government entity may use its Federal TIN (taxpayer identification number), also referred to as an EIN (Employer Identification Number), for identification purposes. Governmental units, such as states and their political subdivisions, are not generally subject to federal income tax.