Mary Haas

General Manager

Dr. Haas has global responsibility for Gardner Cryogenics equipment and aftermarket services. Her scope includes commercial activities, engineering, technology, and manufacturing. She joined Air Products in 2003 as R&D technology manager for Electronic Materials, developing commercially proven products spanning microelectronics and solar technologies. Following this, her roles included business manager for liquid and bulk hydrogen, carbon dioxide, and oil field services in the Houston regional business office, and director of transformation, quality, and continuous improvement for engineering, manufacturing, technology, and equipment, where she was responsible for organizational transformation and change management, as well as ongoing competitiveness and growth initiatives across all product lines and processes. Dr. Haas received a B.A. degree in chemistry from Drew University and a PhD in chemistry and materials science from Princeton University.

Ravi Subramanian

Business Development and Product Manager

Mr. Subramanian has global responsibility for Gardner Cryogenics equipment sales, product development, and projects including world class repair and rehab for aftermarket services. He joined Gardner Cryogenics in 1995 as design engineer and has held numerous roles within the organization, later transitioning into a business development role in 2010 to develop hydrogen mobility for Asia. As part of the Gardner Engineering team, he was responsible for the design and regulatory approvals of liquid helium (LHe) and liquid hydrogen (LHy) transportation equipment built by Gardner, including a 4500-gallon LHe container with a hold time of 270 days for the US Antarctic Program. In his current role, Mr. Subramanian’s main focus is to commercialize LHy stationary tanks and semitrailers for the global energy market and high pressure, low heat leak LHe containers for the global helium market. Mr. Subramanian received a B.E. degree in mechanical engineering from Sastra University, India and a M.E. in Mechanical Engineering from Tennessee State University.

Rob Sallash

Design Engineering Manager

Mr. Sallash is responsible for the engineering and design of Gardner Cryogenics liquid helium and liquid hydrogen stationary and transportation equipment. In this role, he leads the design and engineering team, with a focus on ensuring Gardner equipment is both safe and reliable for customers around the world. He and his team perform thermal heat leak, structural, and vibration analysis for the equipment built by Gardner Cryogenics and provide both technical support to customers and to Gardner’s World Class Rehab and Repair business for existing equipment. Mr. Sallash works with regulatory agencies and third-party inspectors to get approvals for Gardner stationary and transportable cryogenic tanks. Having joined Gardner in 1995 as a Design Engineer, he has held numerous engineering roles, and has extensive experience designing and engineering cryogenic vessels and piping. He is an active member of multiple committees within The American Society of Mechanical Engineers (ASME) and The International Organization for Standardization (ISO), including ASME Section XII – Rules for Construction and Continued Service of Transport Tanks and ISO TC-220 Cryogenic Vessels. Mr. Sallash holds a B.S. and M.S. in mechanical engineering from Lehigh University and is a registered Professional Engineer in the state of Pennsylvania.

Ellen Walter

Marketing Manager

Ms. Walter is responsible for growing the business through strategic marketing planning and implementation with a focus on the existing base of business, new product development, and new opportunities. She is also responsible for overseeing all brand development and management for the new branding of Gardner Cryogenics. Prior to joining Gardner Cryogenics, she spent ten years at Synergis Technologies, where she introduced and grew digital marketing efforts, helped build the marketing stack necessary for ongoing lead generation, and rebranded the organization. Additionally, she is an adjunct faculty member at DeSales University, teaching marketing strategy. Ms. Walter holds a B.S. from Ursinus College and an MBA with a concentration in marketing from Saint Joseph’s University.

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