A legacy of resilience, rooted in Western NY
MEET OUR FOUNDER
Duane Duncan
Hi, I’m Duane Duncan, founder and owner of Niagara Industrial Mechanical. For nearly four decades I have built this company from the ground up with craftsmanship, trust, and precision at the center. What started as a small job shop in Niagara Falls has grown into a full-service industrial mechanical contractor that industries across Western New York depend on.
take a look at our journey over the years
Veteran Leadership, Local Excellence
As a US Navy veteran, I bring a disciplined, mission-focused mindset to every project. That experience taught me the importance of foresight, accountability, and doing the job right the first time. At NIM, we carry those values forward. We do not just build systems. We build resilience that gives our clients peace of mind.
Forged by Craft, Enhanced by Legacy
When we joined with Croisdale Fabrication crew, a respected family-run metalworking business with more than 90 years of history in this region, we combined generations of craftsmanship with modern systems and equipment.
for our clients this means:
expanded fabrication power, including CNC Waterjet & Plasma cutting, sheering, bending and forming under one roof.
Generational skill and deep knowledge of metalwork combined with NIM’s precision and process discipline
A stronger foundation of reliability in every weld, cut, and install
Growing Stronger With Hugo Electrical
Joining the ownership team at HUGO Electrical Services, a Western NY company founded by veterans with the same focus on integrity and technical excellence that defines NIM, allows us to have a partnership that delivers:
• Seamless mechanical and electrical services in one place
• Faster timelines and more efficient coordination
• Clearer communication and accountability across trades.
Built on Relationships. Defined by Results.
Our growth has always come from strong relationships and proven results. We have built long-standing trust with companies like ReWorld, Dolomite Group, IMA Life, and CRH because we consistently deliver precision, safety, and value. We are proud to be rooted in Niagara Falls and committed to serving the industries that keep this region moving.
Why This Matters to You
If you need more than a vendor, you need a partner who understands the risks you face, who delivers clarity under pressure, and who builds systems that last. That is the kind of partner we strive to be every day at NIM.
Let’s Build a Reliable Future Together
We have supported major industrial clients across Western NY for over 30 years, delivering quality that speaks louder tan website promises – same crews, same standards.
meet our team
duane duncan
Founder & President, Niagara Industrial Mechanical
Duane Duncan is a seasoned mechanical contractor with over 35 years of experience in industrial and commercial projects. As founder of Niagara Industrial Mechanical and co-owner of HUGO Electrical, he has successfully scaled operations to 50+ employees while serving 200+ clients. Duane is recognized for his strategic leadership, integrity, and commitment to operational excellence. He emphasizes safety, quality, and innovation, investing in advanced technology and workforce development to deliver efficient, high-quality results. Duane cultivates long-term client partnerships and fosters a workplace culture of accountability and collaboration, ensuring the company consistently meets complex project demands while maintaining strong community and industry engagement.
Steve Striewing
Project Manager / Field Supervisor (since 2016)
Steve Striewing combines military discipline with practical field experience to lead projects with structure, adaptability, and trust. His background taught him how to break down complex tasks, adjust under pressure, and keep teams aligned toward the goal. Clients appreciate his accuracy in estimating, transparency in communication, and accountability in delivering results on time and within budget. Known for turning challenges into opportunities—like resolving a critical equipment failure without delays—Steve thrives on problem-solving and teamwork. What drives him most is building lasting client confidence, mentoring crews, and improving processes to deliver safe, high-quality results every time.
Rich Hickman
Salesman / Project Manager
Rich Hickman brings over 25 years of industry experience, including 13 years in sales with Niagara Industrial Mechanical. With deep expertise in planning and leading complex projects, he ensures client needs align perfectly with the company’s capabilities. Known for clarity, honesty, and professionalism, Rich is always on time, responsive, and committed to overdelivering, making every project’s success a top priority. Proud to represent a veteran-owned operation with strong values, he thrives on building lasting customer relationships and delivering reliable, high-quality results across every project, big or small.
Veronika Duncan
Chief People & Strategy Officer
Veronika Duncan brings over 10 years of experience in service, sales, and marketing, enriched by broad multicultural exposure. As Chief People & Strategy Officer, she focuses on building strong teams, fostering clear communication, and creating lasting connections with customers. Veronika leads marketing and promotional efforts that showcase Niagara Industrial Mechanical’s strengths while driving growth through strategic partnerships. With a people-first approach and a focus on opportunity, she ensures the company continues to thrive by aligning customer needs with long-term business goals.
Scott Swarthout
Site Foreman / R&D Manager
Scott brings more than 25 years of experience in welding, pipefitting, and industrial construction to the NIM team, backed by certifications in OSHA 30, GMAW, and carbon steel TIG. His career spans critical industries, including natural gas pipelines and industrial safety, giving him a deep understanding of precision, reliability, and risk management. At NIM, Scott’s strength lies in translating this expertise into real value for customers—leading teams with knowledge, problem-solving, and a sharp focus on safety and efficiency. His commitment is to deliver projects to the highest standard while ensuring clients benefit from both his technical depth and his ability to guide crews toward consistent, successful outcomes.
Christy Mielke
Comptroller
Christy Mielke has been the accountant of Niagara Industrial Mechanical since 1994. With a degree in accounting and over 30 years of experience, she ensures all financial records are accurate, transparent, and securely maintained. Known for her precision, trustworthiness, and organization, Christy keeps the company’s bookkeeping meticulous and reliable. Her attention to detail and knowledge of everyday accounting practices make her a key partner in maintaining financial clarity and integrity. Always open to suggestions and committed to follow-through, she works seamlessly with clients and teammates, supporting smooth operations and fostering confidence in every project.
Dave Mielke
General Manager
“Excellence isn’t just in the work we deliver—it’s in how we treat each other along the way.”
Dave has been with the company for 30 years, starting alongside the founder and learning the mechanical trade from the ground up. With deep knowledge in skilled trades, estimating, coordination, and shop operations, he runs projects with precision and calm focus. What customers value most is his honesty—fair quotes, clear communication, and staying in charge from start to finish. He empowers his team to work with pride and commitment, creating a culture rooted in trust, respect, and craftsmanship, making sure the team works together, stays on track, and delivers quality every time. For Dave, being a GM is simple: do the work right, treat people fairly, and take pride in every job.
Mark Croisdale Jr.
Lead Engineer, Fabricator & Estimator
With a mechanical engineering degree from BU and almost 30 years of hands-on experience, Mark brings unmatched expertise to NIM’s most demanding projects. Having grown up in his family’s fabrication shop, he developed a versatile skill set—from 3D CAD modeling and SolidWorks mastery to engineering error-proof, cost-effective solutions. Mark’s work spans everything from dust collectors to highly complex separation systems, always with a focus on precision, reliability, and customer value. Known for rethinking challenges, offering alternatives, and envisioning the bigger picture, he takes pride in aligning engineering excellence with client needs. His goal: deliver smarter solutions that anticipate risks, strengthen performance, and exceed expectations in every critical industrial sector.
Erica Duncan
Office Administrator
Erica Duncan has been the backbone of Niagara Industrial Mechanical since 2015, expertly managing the company’s administrative operations as it grew from 10 to over 50 employees. Known for her efficiency, focus, and productivity, she ensures smooth communication between teams, accurate documentation, and seamless office workflow. Erica also tracks hours against assigned POs, keeping production transparent and providing clients with clear, reliable updates. Clients and staff alike rely on Erica’s attention to detail, organizational skills, and proactive problem-solving. Her dedication keeps office operations running smoothly, supporting the company’s reputation for reliability, professionalism, and exceptional client service.