Tenn. Code Ann. § 67-7-104: [Current version. See second version of section with contingent amendment and Compiler's Notes.] Measure of tax

The measure of the tax on all coal products severed from the ground in this state shall be:

(1) On or after July 1, 2009, through June 30, 2011, fifty cents (50¢) per ton;

(2) On or after July 1, 2011, through June 30, 2013, seventy-five cents (75¢) per ton; and

(3) On or after July 1, 2013, one dollar ($1.00) per ton.