Our 2017 Speaking Staff Includes:

Meet our professionals

Pieter Eenkema van Dijk

Van Dyk Recycling Solutions

Pieter Eenkema van Dijk grew up in the Netherlands where he received a master’s degree in economics at Groningen University in the Netherlands and an MBA from Insead Business School at Fontainebleau in France. In 1984, he founded Van Dyk Baler Corp. in North America and is the company’s current president. Now Van Dyk Recycling Solutions, the company has the exclusive distribution rights in the U.S. and Canada for Bollegraaf Recycling Solutions, Lubo Systems and TOMRA sorting solutions. He is located at the Van Dyk headquarters in Stamford, Connecticut, with regional offices in Los Angeles, Chicago, Houston, Toronto and Tampa, Florida.

Nat Egosi

RRT Design & Construction

Nathiel Egosi, P.E. is president and chief executive officer of RRT Design & Construction, a leading engineering, equipment and construction services company specializing in solid waste processing and recycling. Since 1989, Mr. Egosi has led the construction of more than 100 material recovery facilities and pioneered the development of advanced technologies for the recycling and solid waste industries. He is widely recognized as an expert in process engineering and equipment design for the recovery of materials. Mr. Egosi is a registered Professional Engineer in 20 states and graduated summa cum laude with a degree in Civil Engineering from the Polytechnic University, New York. Mr. Egosi served as chair of the executive committee of the Solid Waste Processing Division (SWPD) of the American Society of Mechanical Engineers (ASME). He is also a member of SWANA, NRC, NYSAR and NYSASSM.

Mark Henke

Senior Recycling Manager
Republic Services

Mark Henke is the senior recycling manager for Republic Services, where he is responsible for all recycling activities within the Midwestern states, including operations, maintenance, safety and financial results. His coverage includes recycling centers that process various materials from 20 tons per hour to 50 tons per hour. The operations include residential single stream, commercial single stream, high grades paper facilities and construction and demolition processing. Mr. Henke has been a member of the Republic Services recycling team since 2003 and in the field of recycling since 1995.

Jim Keefe

Jim Keefe

Executive Vice President
Recycling Today Media Group

James R. Keefe joined GIE Media, Recycling Today’s parent company, in 1991 in a sales and market research capacity. During his career, he has overseen the continuing development of Recycling Today magazine, which is today the leading business magazine serving the recycling industry. In addition, he has managed the launch of its website, www.RecyclingToday.com, as well as numerous publication launches. Jim currently serves as an executive vice president for GIE Media and is a member of the firm’s executive management team. He is a graduate of Ohio University, Athens, Ohio.

Bill Keegan

Dem-Con Companies

Bill Keegan is a registered professional engineer and president of Dem-Con Companies, a third-generation family-owned solid waste management and processing company. One of his responsibilities include the management of the Dem-Con Material Recovery Facility (MRF), which processes mixed commercial and residential recyclable wastes. He has been in the solid waste industry for over 21 years and is active in several solid waste organizations including a current position as the chair of the Minnesota Chapter of the National Waste & Recycling Association, board member of the Recycling Association of Minnesota (RAM), Minnesota Waste Wise Board Member; SWANA MOLO Instructor, and an instructor for the Minnesota Landfill Operator Training program.

David Marcouiller


David Marcouiller joined the Machinex team as a research and development draftsman in 2003 and currently resides as the executive vice president of sales engineering. He plays an integral role in the company’s success by ensuring that all quality standards of the sorting solutions are maintained. He also oversees a team of 12 sales engineers that handle all aspects of the design and building process. Marcouiller has been the lead designer on many successful projects, with a testament and pillar of his accomplishments being the Rumpke facilities in Ohio. He is a 2002 graduate of Shawinigan College with a degree in technical engineering.

Joaquin Mariel

General Manager
Balcones Resources

Joaquin Mariel is the general manager at Balcones Resources’ Austin, Texas-based recycling division. As a member of the Balcones team, he manages the company’s flagship MRF, a secure document destruction facility, and works to develop innovative material management methods that make the recycling process more efficient and cost-effective for the company and its clients. Previously, he served as the executive director of the historic Central Texas nonprofit, Ecology Action of Texas. His efforts there have led to increased access to recycling opportunities for Austin’s residents and an expanded awareness of the importance of recycling and other landfill diversion activities across the state.

Jill Martin

Recycling & Resource Recovery Administrator
Outagamie County Recycling & Solid Waste

Jill Martin has served in the Wisconsin recycling industry before recycling became law in the early 1990s. Jill began her work with no pay, as a recycling intern who watched in awe as a county-run, dual-stream MRF was being built. She graduated from the University of Wisconsin Green Bay, with a bachelor’s degree in environmental policy and planning. As the recycling and resource recovery administrator for Outagamie County, Wisconsin, she is responsible for overseeing MRF staff and operations, as well as managing other programs related to collection, transportation, processing, marketing and public education for all resources recovered from the county landfill.

Jerry Sjogren

E.L. Harvey

Gerald R. Sjogren is the safety director of E. L. Harvey & Sons Inc., a position he has held since 1991. He has built comprehensive safety, environmental and health programs specific to the waste industry, including training in HAZMAT Incident Response and Command up to Level 700. His commitment to safety extends to serving on local and national professional industry organizations, from the National Waste and Recycling Association to ANSI Z245 Sub-Committees. Sjogren serves as vice chairperson of the Westborough Local Emergency Planning Committee; chairperson of the ISRI Circle of Safety Steering Committee; and vice chairperson of the ISRI Safety Operations Committee.