House Bill 308 aims to extend the distribution and statutory appropriation of metalliferous mines license tax collections to counties in Montana. The bill amends several sections of previous laws, specifically changing termination dates for certain provisions. Notably, it modifies the termination date from June 30, 2019, 2027, and 2037 to June 30, 2035, in multiple sections, ensuring that the provisions remain in effect for a longer period.

The bill also introduces a new clause that specifies that, except for certain provisions, the act will terminate on June 30, 2027. This adjustment is intended to provide clarity on the duration of the act's effectiveness and its implications for local governance regarding tax collections from metalliferous mines. Overall, the bill seeks to enhance the financial resources available to counties through extended tax collection provisions.