Via AG Metal Miner Plummeting zinc metal prices and rising energy costs recently prompted Boliden to place its Tara zinc mine on care and maintenance until further notice. “The business is currently cash flow negative due to a combination of factors,” the Swedish metals producer said. Officials went on to specify that these operational challenges included “a decline in the price of zinc, high energy prices, and general cost inflation.” Tara is an underground mine about 60 kilometers northwest of Dublin, Ireland. Zinc prices…