OMAHA, Neb. -- Dozens of Utah coal miners are picketing outside Berkshire Hathaway's ( BRK.A) annual meeting in downtown Omaha. The protesters are members of United Mine Workers of America who work at Deer Creek mine near Huntington, Utah. The mine is run by a subsidiary of Berkshire's MidAmerican Energy Holdings Co. The union's contract expired in January, and the union and company are disagreeing on health care coverage and safety checks. A mine spokeswoman says the company is committed to a fair solution but won't comment on specific proposals. Bernie Morris of Price, Utah, stood in the rain to hand out flyers. The 67-year-old Morris says he's worked for the coal mine for 28 years, but fears he won't be able to afford the monthly health insurance premium the company wants to charge.