Nesco, Inc. (formerly known as National Environmental Service Co.) operates the businesses of installation of fueling systems and related facilities. The company also provides cathodic protection for underground metal tanks, environmental site assessments, contaminated soil and water remediation and the installation and removal of storage tanks. The company is the distributor of Wayne Fueling Equipment sales and service in Houston and for eastern Oklahoma, western Arkansas, and southwestern Missouri. The customers of the company include motor service stations, grocery stores and convenience stores with fueling facilities, commercial trucking companies, railroads, airports, oil producers, refiners, pipeline operators and federal, state and local governments. The operating areas of the company include Oklahoma City, Dallas, San Antonio, Columbia, Largo, Greenville, Pittsburgh and South Charleston. During 2000, the company acquired Hopkins Appraisal, Inc., certain assets and liabilities of Trust Environmental Services Company, LLC, Kentucky Environmental Network, LLC and Atlanta Petroleum Equipment Company, Inc. Fuelling installations accounted for 54% of 1999 revenues; environmental site assessment and remediation, 43% and other, 3%.