The Bridgestone Americas Warren facility tops all other tire makers in the world in reducing the energy per unit of production, plant manager John Stewart told the McMinnville Noon Rotary Club on Thursday.That achievement also means the atmospheric carbon pollution resulting from building a tire in Morrison would also be a global minimum, except for a sister Bridgestone plant in Canada where most electrical energy comes from non-polluting hydroelectric dams, Stewart noted. In the Tennessee Valley, more than half of electric generation occurs at coal-burning power plants, a leading source of heat-trapping emissions.“Valuing natural resources is one of our major goals,” said Stewart, who became the Warren plant manager in August 2014. The local plant was recertified in that year for LEED Silver Level, a national recognition for energy management and conservation based on objective engineering and environmental-protection standards.