Bringing Safe, Responsible Economic Growth to Cass County

Waelz Sustainable Products (WSP) established operations in Cass County – creating new jobs and incremental annual business tax revenue to Cass County and the State of Indiana.


We would like to hear from you. If you have any questions or comments about the proposed project, please fill out the form below and our team will review it.

Giving Back

Heritage and Zinc Nacional establish deep roots in the communities where we operate.

Zinc Nacional supports over 75 organizations annually, including its Grupo Promax Foundation to support vulnerable populations and improve their standard of living and well-being through community development programs, education, and health.

Heritage engages in a number of local initiatives, partnering with The Children’s Museum of Indianapolis to establish The Heritage Group Center for Family Learning in STEM, which provides inspiring science programs to spark interest in STEM subjects. In addition, they actively support the Women’s Fund of Central Indiana, an organization creating sustainable change for women and girls in our community.

WSP intends to carry on in the same spirit by focusing on education and job training and by contributing grants to community and school groups for environmental and other projects.


Waelz Sustainable Products

WSP is a joint venture between Zinc Nacional and Heritage Environmental Services founded in 2018 to service the steel mini-mill industry by providing a sustainable solution for by-products. WSP combines the experience of Zinc Nacional as a pioneer in Waelz Kiln technology, along with the environmental expertise and innovation of Heritage Environmental Services.

Zinc Nacional

Zinc Nacional is a privately-held, family-owned business based in Monterrey, Mexico with more than 60 years of experience in zinc compound production. Zinc Nacional operates Waelz Kiln technology in the U.S., Mexico, South Korea and Turkey.

Heritage Environmental Services

Heritage Environmental Services is a privately-held, family-owned business headquartered in Indianapolis, Indiana with more than 1,600 creative problem-solving team members across North and Central America. Heritage Environmental Services provides a full suite of tailored solutions – from emergency response, waste disposal, sustainability services, brownfield redevelopment, and on-site support and technical solutions – to thousands of customers in hundreds of industries and verticals.