Md. Code Regs. 09.17.01.03
If a boiler certification is required, a licensee shall:
A. Display conspicuously a current and valid license of each individual assigned to oversee a boiler:
Authority: Business Occupations and Professions Article, §§6.5-205, 6.5-304, 6.5-305, 6.5-306, 6.5-311, and 6.5-314(a)(1)(iv), Annotated Code of Maryland
Effective date: August 5, 2013 (40:15 Md. R. 1229)
Regulation .02 amended effective May 22, 2017 (44:10 Md. R. 472)
Regulation .04 adopted effective February 25, 2019 (46:4 Md. R. 190)