Our Team
Brian Gerrior Jr. founded Diamond Mechanical, Inc. in August 2017, bringing over 20 years of HVAC/R expertise as a third-generation member of the Pipefitters Local Union 537. With deep experience across HVAC/R, large-tonnage equipment, controls, and system integrations, Brian has led Diamond Mechanical’s expansion from a one-man operation into a robust firm with 27 employees across three divisions, including Plumbing and Building Automation Controls.
Under Brian's leadership, Diamond Mechanical has carved out a unique niche in the cannabis industry, leveraging his expertise in hospital and pharmaceutical-grade systems to provide tailored solutions for cannabis operations. This specialized approach has enabled the company to deliver substantial ROI for multi-state operators nationwide by translating localized, high-performance solutions into multimillion-dollar results.
Brian’s background as a field mechanic spans service, maintenance, sales, and construction, giving him a well-rounded perspective that has been instrumental in Diamond Mechanical’s success and growth.
Brian Gerrior
David Duden brings a wealth of expertise in design, development, operations, and commissioning across multiple sectors, including insurance, medical, industrial, and cannabis. With a track record spanning COO-level roles to construction management, David provides clients with comprehensive, high-impact support. His project management experience includes overseeing projects valued up to $6.8 billion, consistently achieving on-time, on-budget delivery while upholding stringent quality and safety standards.
David is renowned for his strategic vision, solution-oriented approach, and commitment to health and safety, combined with exceptional communication and collaboration skills. His extensive work in the cannabis industry has covered all aspects of facility development, from cultivation and processing to manufacturing and packaging, with deep technical knowledge in precision-controlled environments, vapor pressure deficit, carbon dioxide enrichment, and good production practices.
In addition to project management, David offers executive management services tailored to support operations facing growth challenges or complex management needs. His expertise in troubleshooting and optimizing facility performance has proven invaluable in enhancing operational efficiency and profitability, making him a trusted leader for clients seeking to elevate their business performance.
David Duden
With over a decade in the cannabis industry and 20 years of leadership expertise, Kim has shaped high-impact cannabis manufacturing operations across both medical and adult-use markets. Starting her career with a background in chemistry and 10 years in the nutraceutical and natural products field, she developed a strong foundation in analytical testing and compound isolation, which she now brings to cannabis production.
As Vice President of Manufacturing at Jushi Inc., Kim managed operations across five facilities nationwide, overseeing annual revenues exceeding $280 million. Known for her focus on facility design, compliance, GMP implementation, and process optimization, Kim has implemented quality and safety programs, optimized workflows, and introduced production tracking systems to elevate business performance.
Kim’s entrepreneurial drive led her to establish a successful consulting firm, which was later acquired by a major cannabis company. Her deep industry expertise and proven success in building high-performing teams and executing critical business initiatives make her a respected leader and innovator in cannabis manufacturing.