EES Increases Revenue for a Third Year in a Row ‑ Year-End 2019 Financial Results PR Newswire OKLAHOMA CITY, March 30, 2020 OKLAHOMA CITY , March 30, 2020 /PRNewswire/ -- Energy and Environmental Services, Inc. (OTC-PINK: EESE) announced its unaudited financial results for the year ended December 31 , 2019. Revenues increased from $7,201,300 to $8,566,800 in 2019. The cost of sale margins also improved in 2019, which were 52.0% of sales in 2018 versus 34.0% of sales in 2019. Despite these...