About Us
DMI and the Visual Navigation

Founded in 1991 as an information services provider in New York City, Drawing Management, Inc. (DMI) has transitioned from providing scanning services to a Systems Integrator/Value Added Reseller of document management products to its current role as the developer and implementer of Spatial Linking Methodology (SLM) Software. SLM is a patent protected software product, which simplifies the management of technical and administrative information. The marketing focus for SLM is in industries and applications that create and use technical documentation, data, and software for engineering, facilities, infrastructure, and other physical assets and functions from an enterprise perspective.


Finding the right document when you need it shouldn’t be an arduous process. Accessing documents and information should be easy and intuitive. DMI’s approach to document management is unique, leveraging our proprietary spatial linking methodology (SLM) software product. SLM was created to be distinctly different from traditional systems by providing a rapid, visually intuitive way to access information from legacy as well as new systems.

With 20 years experience working with large-scale clients whose information system requirements are complex, critical and sensitive, DMI identified shortcomings in their traditional document management and database systems. From nuclear power plant owners to transit authority operators, their need is consistent: how to get quick access to accurate, up-to-date information, especially drawings and technical documents? DMI developed SLM as the solution.

SLM augments traditional search methods, employing potentially unlimited multi-level drilldowns. SLM is easy to integrate with other document management systems. SLM can be applied to existing and new facilities, alike. SLM is scalable and can be implemented in phases to facilitate the longer-term operational considerations of a project or budget.

DMI’s successes go beyond a unique approach to document management. DMI was convinced there was value in having qualified professionals, particularly engineers, implement technical information solutions. Our client’s drawings and documents are never just images on paper, mylar, film or electronic files; they are critical pieces of information that built and managed bridges, subways, tunnels, power plants and buildings. Since 1991, DMI has scanned and integrated more than 1.5 million drawings and 1 million text documents into information system designed by DMI or others. Total Commitment to meeting the unique needs of our clients is the cornerstone of our business.

As a provider of products and services for mission critical applications where the information is highly sensitive, DMI has developed a reputation for excellent performance under challenging conditions. On September 11, 2001, DMI was the principal source of physical asset information for The Port Authority of NY&NJ after The Port Authority lost 200,000 facility drawings stored in Tower Number One. DMI had scanned and helped manage these drawings for The Port Authority, and the replacement images were provided to The Port Authority at no cost. During the same difficult time, DMI completed the migration of 250,000 drawings from Con Edison's Metaphase document management system to a Motiva eChange system, when Con Edison sold their Indian Point 2 nuclear power plant to Entergy.

Executive Team


Stephen Thomson is the President and Founder of Drawing Management, Inc. (DMI), an information technology company that specializes in technical document management, systems integration and database systems. Mr. Thomson is a civil engineer who has also worked in the fields of architecture, environmental and land management, manufacturing and information technology. While in graduate school at Yale University, he organized and managed the original Earth Day in Connecticut. He then played a key role in the creation of the Department of Environmental Protection in Connecticut and served as its first Director of Water and Land Resources. Mr. Thomson then served as the first Executive Director of Land Resources for the State of North Carolina during which time he established one of the first Statewide Geographic Information System (GIS) programs in the U.S. Prior to founding DMI, he spent ten years in a variety of senior management positions with the Information Systems Group at Martin Marietta Corporation (now Lockheed Martin). Mr. Thomson, a registered professional engineer, received a B.S. in Civil Engineering from Union College and did graduate studies at Yale University in the School of Architecture and the School of Forestry and Environmental Studies. Mr. Thomson is a mentor for the ACE Mentoring Program of New York, a Life Member of the American Society of Civil Engineers and a Founding Sponsor of the Chelsea Music Festival of New York.



Philip Celmer is Vice President of Product Development and Services at Drawing Management, Inc. (DMI). He also acts as a Senior Document and Workflow Program Manager. During the past seventeen years with DMI, Mr. Celmer has been the lead technical person for a large number of key system integration projects for customers such as The MTA Bridges and Tunnels and Long Island Railroad, The Port Authority of New York & New Jersey, Entergy Nuclear, Yale University and New Jersey Transit. He has also developed the proprietary software used for DMI's scanning and production services and is the lead author of DMI's Search and View document management product. Mr. Celmer is also the principal developer of DMI's Spatial Linking Methodology (SLM) product. In this role, Phil had the lead technical responsibility for the implementation of the SLM product at Con Edison, primarily for their Electric Transmission System. Prior to joining DMI, Mr. Celmer worked with AT&T as an information technology specialist. Mr. Celmer received his B.S in Electrical Engineering and Computer Engineering with high honors from Rutgers University College of Engineering.



Currently, Jeff Thomson is Vice President For Operations at DMI. Prior to coming to DMI, Mr. Thomson was Assistant Director for the County of Cape May MIS Department. In this leadership role, he was responsible for managing major projects as well as day-to-day operational activity for the county's MIS department. In that role, he was the technical project manager for the creation of the Cape May County Health Department GIS Division using ESRI software and IBM hardware. This included designing the system and network infrastructure, implementing OS and ESRI software, verifying connectivity with all attached hardware plus arranging training sessions with startup operations. Technologies included ESRI ArcInfo, IBM Power Unix Server, HP wide format plotter, lighted digitizing table, and color laser printers. He was responsible for other major project initiatives that included a county wide licensed microwave network, enterprise VOIP implementation from Centrex, 700Mhz P25 infrastructure, CommVault software/hardware, conversion from manual to digital voting machines with supporting systems, 50 and 100 KVA natural gas and diesel generators, and the construction of the Regional Records Recovery Center allowing for the safe and secure backup of vital county and municipal digital records in a central location away from the coast. Prior experience includes Network Architect at Cape May County, Site Manager with NYMA Corp. at the FAA Technical Center and operation management positions at Atlantis Casino and First National State Bank. Mr. Thomson graduated from Taylor Business Institute with studies in computer programming and operations.



William Parker has been a member of the Board of Directors and an investor in Drawing Management, Inc. since 1991. Prior to his retirement in 1990 he worked for 43 years for the Duke Power Company in North Carolina. He was Vice President for Fossil and Steam Production for the last fifteen years of his tenure at Duke. During that time, Mr. Parker was responsible for the pre-operational testing, start-up and operation of thirty conventional steam coal-fired generating units and for seven nuclear production units. He is a registered professional engineer who was very active with professional associations, serving in a number of leadership positions including the Chairman of the Edison Electric Institute Prime Mover Committee. During World War II, he served as a naval officer aboard a destroyer. Mr. Parker received a BS in Mechanical Engineering from the Illinois Institute of Technology and attended management training programs with the Duke Power Company, Westinghouse Electric and the Edison Electric Institute.

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