- M. C. Dean (District Of Columbia, DC)
- … in pipefitting, steam fitting or sprinkler systems and have a valid journeymen plumber 's license. + Master 's Plumber 's license issued by Washington Suburban ... Secret, preferred HSPD-12 & Secret Active.** + Must be certified/ licensed in pipefitting, steam fitting or sprinkler systems and...fitting or sprinkler systems and have a valid journeymen plumber 's license. + Master 's Plumber 's… more
- Trinity Health (Silver Spring, MD)
- …+ 1 year of credit for holding a current active license as a: + Master Plumber + Master Heating, Ventilation, Air Conditioning and Refrigeration contractor ... Grade 2 under the direction and control of a licensed MD Grade 1. + 1 year of credit...+ Master restricted Heating, Ventilation, and Air-Conditioning contractor + 4-year… more