 OVERLAND PARK, Kan.--BUSINESS WIRE--Compass Minerals NYSE: CMP, a leading global provider of essential minerals, reported today that fourth-quarter 2020 winter weather activity in its North American-served market was below fourth-quarter 2019 levels but in-line with the 10-year historic average. While winter weather in the fourth quarter of 2020 was average throughout most of its North American market, the Chicago to Milwaukee corridor experienced a minimal number of snow events, with just 