Plant Management

Headshot of Dennis Engelhart, Plant Manager of Thumb Plastics and Regency Plastics.

Gemini Plastics, Inc. (GPI)

Dennis Engelhart is Plant Manager of Gemini Plastics, Inc., Gemini Group’s plastic extrusion facility in Ubly, Michigan. He has over 30 years of experience and has been with Gemini Group since 2011. A member of the Society of Plastics Engineers, Dennis holds an Associate’s degree in Mechanical Engineering from Mott Community College.

Headshot of Rod VanErp, Plant Manager of Valley Enterprises.

Valley Enterprises

Rod VanErp is Plant Manager of Valley Enterprises, Gemini’s Group’s automotive interior trim plant which specializes in Baypreg and compression molding. He has worked for Gemini Group since Valley’s inception in 1992, securing its first book of business growing it into a Tier One supplier. Rod is also a member of the Society of Manufacturing Engineers and the Society of Plastics Engineers.

Headshot of Jeff Weitenberner, Plant Manager of Thumb Tool & Engineering (TTE).

Thumb Tool & Engineering (TTE)

Jeff Weitenberner is Plant Manager of Thumb Tool & Engineering, Gemini Group’s aluminum extrusion tooling plant. He has over 25 years of aluminum extrusion tooling experience including die design, sales and plant management and has been with Gemini Group for over 15 years. Jeff holds various certificates in Lean Enterprise from the University of Wisconsin and was a past committee member on the Extrusion Technology (ET) committee for the Aluminum Extruders Council (AEC). He is currently the Commissioner and New Building Coordinator for the Huron County Hockey Association.

Headshot of Gregg Kranz, Plant Manager at Thumb Plastics, Inc. (TPI).

Thumb Plastics, Inc. (TPI)

Gregg Kranz is Plant Manager of Thumb Plastics, Inc. (TPI), Gemini Group’s two-shot injection molding plant. He has over 25 years of manufacturing experience and has been with Gemini Group for over a decade. Gregg received an Associate’s degree from ITT Technical Institute and has training in LEAN, Kaizen, 6S and various other manufacturing certifications.

Regency Plastics

Bill Main is Plant Manager of Regency Plastics, Gemini Group’s technical blow molding plant. He has over 30 years manufacturing and engineering experience across many different processes including the manufacture of electro-mechanical devices, injection molding, blow-molding and extrusion as well as management experience as a Tier 1 and Tier 2 automotive supplier. Bill is a Lean Six Sigma Black Belt and is a member of the Society of Plastics Engineers as well as a past member of the Society of Manufacturing Engineers.

Headshot of Jennifer Sosnoski, Plant Manager of Gemini Precision Machining, Inc. (GPMI).

Gemini Precision Machining, Inc. (GPMI)

Jennifer Sosnoski is Plant Manager of Gemini Precision Machining, Inc., Gemini Group’s production and precision machining operation. She oversees all operations within GPMI’s North and South facilities, including the Briney Tooling operation. Jennifer has over 25 years of experience and has worked for Gemini Group since 1995 in roles including Plant Accountant, HR Generalist, Quality Manager, Office Manager, Production Manager, Operations Manager, as well as Corporate Manufacturing Controller. She holds a Bachelor of Business Administration degree from Northwood University as well as a Lean Executive Certification.

Headshot of Michael Greenhill, Plant Manager of Consolidated Tool.

Consolidated Tool (CT)

Michael Greenhill is Plant Manager of Consolidated Tool North and South, Gemini Group’s die cast tooling plant located in Muscle Shoals, Alabama. Since 1997, Michael has been dedicated to the manufacturing of aluminum die cast dies and in 2009 joined Consolidated Tool which in 2013 was acquired by Gemini Group. Michael holds an Associate’s degree in Science & Engineering from Northwest Shoals Community College and studied Chemical Engineering at Auburn University.

Headshot of Jim Jurgess, Plant Manager of Mid South Central Extrusion Die (MSCED).

Mid-South Central Extrusion Die (MSCED)

Jim Jurgess is Plant Manager of Mid-South Central Extrusion Die, Gemini’s extrusion die plant in Muscle Shoals, Alabama. He has been with Gemini Group for 24 years in capacities including Die Design Supervisor, Technical Sales Manager, and Plant Manager.

Headshot of Daniel Provencio, Plant Manager of Sierra Plastics.

Sierra Plastics

Daniel Provencio is Plant Manager of Sierra Plastics, Gemini Group’s extrusion facility in El Paso, Texas. He has worked with Gemini Group and its plants since 1993 and has been involved with the manufacturing processes, continuous improvement, and equipment improvements. He is a member of the Society of Plastics Engineers and studied Drafting Technology at El Paso Community College.

Headshot of Pilar Alcantar, Plant Manager of Gemini Plastics de Mexico (GPM).

Gemini Plastics de Mexico (GPM)

J. Pilar Alcantar is Plant Manager of Gemini Plastics de Mexico, Gemini Group’s plastic extrusion facility in Saltillo, Mexico. He has over 31 years of professional experience and has worked for Gemini Group since 2008. Pilar is certified as an Electronic Industrial Engineer and holds a Master of Business Administration from the Instituto Tecnologico de Cd. Juarez, Mexico.

Gemini Group plant managers bring the company’s vision of superior customer service to each Gemini team member on the plant floor, every day.

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