The debate on whether the state should regulate the fast-growing frac sand mining industry continues at the Minnesota Capitol this week, as lawmakers begin to discuss the details and consider specific proposals. A Democrat from Red Wing is proposing a broad bill that aims to regulate the industry and launch research into the impact of silica sand mining on natural resources. Also coming this week in the Minnesota Legislature, lawmakers will consider a measure that would raise the state cigarette tax. Governor Dayton has proposed a 94-cent per-pack hike. The health insurance exchange bill will get another hearing as well, as it continues its march through the Legislature. Committees in the House and Senate are scheduled to hear testimony on a proposal to raise the minimum wage this week as well, and a House Committee is set to consider a proposal to more fully fund all-day kindergarten.