Increasing the salable operating condition maintenance duration requirement for owners or operators of closed iron mines and related facilities; providing for extra retroactive unemployment insurance benefits for laid off employees of LTV mining company in St. Louis county including the power plant operation at Taconite harbor in Lake county; specifying eligibility conditions and the weekly and maximum amounts; providing a workers compensation disability insurance offset; sunset provision; providing criteria for future unemployment benefit extensions(Ch. 30, 2001)