((a)) ** Definitions** In this section:
((1)) ** Eligible entity** The term “eligible entity” means—
((A)) a producer of agricultural commodities;
((B)) a cooperative association, a majority of the members of which produce or process agricultural commodities; or
((C)) a person in the trade or business of—
((i)) selling an agricultural product (including an agricultural chemical) at retail, predominantly to farmers and ranchers; or
((ii)) aerial and ground application of an agricultural chemical.
((2)) ** Nurse tank** The term “nurse tank” shall be considered to be a cargo tank (within the meaning of section 173.315(m) of title 49, Code of Federal Regulations, as in effect as of the date of the enactment of this Act).
((b)) ** Grant authority** The Secretary may make a grant to an eligible entity to enable the eligible entity to obtain and add to an anhydrous ammonia fertilizer nurse tank a physical lock or a substance to reduce the amount of methamphetamine that can be produced from any anhydrous ammonia removed from the nurse tank.
((c)) ** Grant amount** The amount of a grant made under this section to an eligible entity shall be the product obtained by multiplying—
((1)) an amount not less than $40 and not more than $60, as determined by the Secretary; and
((2)) the number of fertilizer nurse tanks of the eligible entity.
((d)) ** Authorization of appropriations** There is authorized to be appropriated to the Secretary to make grants under this section $15,000,000 for the period of fiscal years 2008 through 2012.