Doe Run is led by a nine-member team of metals and mining industry leaders. Together, they have more than two centuries of experience in the mining and metal production industries.
Our Executive Team provides leadership to the company and the industry at large through active involvement in multiple metals and mining industry organizations, by supporting community organizations, and through their commitment to balance Doe Run’s economic stability with environmental and community responsibilities.
Meet Our Leadership
President and Chief Executive Officer
J. Ross Conner
Vice President – Exploration
Vice President – Human Resources and Community Relations
Vice President of Finance and Chief Financial Officer
Vice President – Information Technology
Jose V. Hansen
Vice President – Sales and Marketing
Matthew D. Wohl
Vice President – Law
Vice President – Environmental, Health and Safety
Vice President – Southeast Missouri Operations
Jerry Pyatt is proud to be a second-generation Doe Run employee and to spend his entire career with the company. He gained valuable first-hand experience across the company’s operations with roles in the laboratory, at Resource Recycling, in mining and milling, and overseeing smelter operations; ultimately rising to COO before becoming president and CEO in 2013. Jerry leads our nine-person Executive Team that sets the company’s vision, mission and strategy.
The ability to motivate positive change within Doe Run and the industry defines Jerry’s career.
“Leading the development of our breakthrough hydrometallurgical metal production technology is a highlight of my career. We’re determined to bring this technology to the industry. It will provide increased value to the industry and Doe Run, and, most importantly, enable us to deliver on our environmental goals.”
Jerry mentors the next generation of metals and mining industry leaders as an alumni board member of the Missouri University of Science and Technology (Missouri S&T) Mining Department. He also serves on the boards of the Battery Council International, St. Louis Regional Chamber, and St. Louis Regional Business Council.
Raised in southeastern Missouri, Jerry enjoys the great hunting and fishing in the area, as well as family time with his grandchildren. He also gives back to the community as a board member for Teen Challenge of St. Louis.
He received a bachelor’s degree from the University of Missouri-Columbia, and is a graduate of the Stanford University Executive Program.
J. Ross Conner
For a mining company like Doe Run, growth is critical to our survival. Mineral resources are finite, so significant exploration and innovation are critical to staying ahead of a fixed resource. Ross Conner guides Doe Run’s exploration and technical development groups to drive us forward in both of those areas. He has evolved our geology initiatives to expand exploration efforts in Missouri’s Viburnum Trend and identify other international mineral resource opportunities. Ross also oversees the team developing additional applications for the company’s hydrometallurgical metal production technology.
“Doe Run has given me the opportunity to be part of an exciting team that directly contributes to the growth of the business. We’re always looking for ways to advance our sustainable mining practices, whether that’s to improve our processing capabilities using our hydrometallurgical processes or developing base metal deposits in new areas.”
Ross holds a Professional Geoscientist Certification from, and is an ongoing member of, the Association of Professional Engineers and Geoscientists Manitoba (APEGM). He is also a member of the Corporate Advisory Committee of Missouri University of Science and Technology.
Talented people are at the core of Doe Run’s business, and Mark Coomes is proud of his role in bringing skilled and dedicated metals and mining industry leaders to the Doe Run family.
“I consider the people I work with to be some of the hardest working in America. Each of them provides critical metals that touch the lives of every American, and they do it with a humble attitude and genuine concern for the safety and well-being of each other and their community. I’m fortunate to work alongside every one of them.”
Mark also oversees our relationship with the community and industry. We strive to maintain a good partnership with our communities by seeking to understand and answer their questions of the company, and how we can support their goals. Doe Run partners with industry peers to teach society about lead’s essential role in powering our lives, and the promising future of mining and metal production. Mark serves on the executive committee for the International Lead Association.
People are Mark’s focus outside of Doe Run as well. He volunteers on the human resources committee and supports recruitment for his church.
Mark received his bachelor’s degree in American history from the United States Military Academy (West Point) and an MBA from Washington University in St. Louis.
Terry Fox’s time at Doe Run has been marked by change – in the industry and the company. In a dynamic industry, Doe Run must be dynamic too. Terry led the Finance Team in implementing advanced software tools that enable the team to better gather and share information, adjust forecasts with changing market conditions, and model a variety of scenarios.
“Years ago, it might take a week to get the kind of business insights that take just a couple of hours now. We’ve been successful in adjusting to the changing global market by taking advantage of new technologies, and by building a culture that values employee input to find those ways to continuously advance.”
Terry embodies Doe Run’s commitment to educate the next generation. He shares his accounting and finance experience with students directly as an adjunct professor at Washington University School of Law. He also is a member of the Association for Corporate Growth. Outside of work, you’ll find Terry snow skiing and hiking in the Montana Rocky Mountains.
He received a bachelor’s degree in economics from the University of Delaware, where he was a member of Omicron Delta Kappa, the National Leadership Honor Society, and was also a Distinguished Military Graduate. Terry received his MBA from the University of California, Los Angeles (UCLA), Anderson School of Management.
Sharon Gietl directs Doe Run’s award-winning information technology systems team. Sharon and the department have been recognized as one of Computerworld’s Premier 100 IT Leaders, Information Week’s 500 Top Technology Innovators Across America, St. Louis Business Journal’s 25 Most Influential Business Women, and first runner up in the Project Management Office of the Year Awards.
Being able to make an impact is what Sharon loves about working at Doe Run. “One person can have a tremendous impact at Doe Run. Our culture enables me to work across the entire company to bring ideas to life. What’s more, we as a company provide valuable products that improve people’s quality of life. I take great pride in knowing that my work contributed to a product that is good for society.”
Just a few of her impacts at Doe Run include creating the Project Management Office, moving to the cloud environment to take advantage of the latest technologies while reducing unit costs, and integrating information technology and operations technology as part of the company’s digital transformation.
Sharon’s commitment to improvement extends to the industry. She regularly contributes her insights and solutions to the industry magazine CIOReview and she is a charter member of Women Executives in IT. She received her bachelor’s degree in chemistry/biology from Clarke University (previously Clarke College).
Jose V. Hansen
Jose Hansen likes challenges, and matching Doe Run’s concentrate and metal sales to the global market can certainly be a challenge.
“Every day represents a new opportunity to see how we can align our resources and actions with what is taking place in the global marketplace for the benefit of our company and our employees.”
One of Jose’s greatest challenges was managing the transition from selling primary metals as our core business to becoming a global mineral concentrates business when we closed the last U.S. primary smelting operation. His team worked hard to make this transition as smooth as possible for customers and the company.
Jose tackles challenges outside the office too – regularly supporting organizations that help underprivileged citizens and their families.
And, he shares his nearly 40 years of expertise as a mining industry leader to help the industry improve. He speaks at industry conferences, and is an active member of Battery Council International, International Lead and Zinc Study Group, Minor Metals Trade Association and the International Precious Metals Institute.
Jose received his metallurgical engineering degree from the Universidad de Lima (University of Lima, Peru) where he also taught specialty courses to the faculty of Metallurgical Engineering. He received his MBA from Universidad del Pacifico (Lima, Peru).
Matthew D. Wohl
Joining Doe Run in 2009, Matthew Wohl brought more than a decade of legal expertise in corporate and commercial law, both as outside and in-house counsel. Having also served as general counsel at a cable company and a steel company, Matthew is well versed in the diverse issues that face complex organizations.
During Matthew’s tenure, he has developed an extremely talented in-house legal staff who are dedicated to protecting and sustaining our organization and employees.
“I like the diverse aspects of my role at Doe Run. I particularly enjoy the time I get to spend with elected officials and regulators, educating them about who we are and what we do. Searching for common ground in conversations with individuals representing diverse socioeconomic regions and vastly differing political ideals is both challenging and deeply rewarding.”
Matthew received both an undergraduate degree in economics and political economy, and a master’s degree in political economy and public policy, from Washington University in St. Louis. Matthew’s law degree is from St. Louis University.
When your company values environmental sustainability and managing the natural resources in our care, you name a person who has designed and built 1,000 lakes and planted nearly 8 million trees to head the Environmental, Health and Safety (EHS) team.
Mark Yingling oversees the company’s environmental improvement and remediation projects, as well as employee health and safety. He’s proud to say that during his time, the company has completed six water treatment plants, and gained multiple International Organization for Standardization (ISO) certifications. We’ve also earned multiple Sentinels of Safety Awards from the National Mining Association, bringing the company total to 28 since 1971.
Mark brings his EHS expertise to local organizations as well. He serves on the board for Regulatory Environmental Group for Missouri (REGFORM) and the board of the Associated Industries of Missouri. He also is a member of the Society of Mining Engineers and the American Society of Mine Reclamation where mining industry leaders share best practices in soils handling, revegetation and remediation.
Mark has won numerous international, national and state awards, including the Office of Surface Mining Reclamation and Enforcement National Director’s Award and the New South Wales Environmental Innovation Award.
He received his bachelor’s degree in engineering from the University of Illinois at Urbana-Champaign and his MBA from Washington University in St. Louis. Mark is a Mine Safety and Health Administration certified structure inspector.
Doe Run has been the only place Steve Batts wanted to work since taking a Summer Jobs Program job in Herculaneum during college. Over his 30+ years with the company, Steve took on roles with increasing responsibility in both mining and metal production, and was named vice president overseeing all operations in Southeast Missouri in 2015.
His employees are family to Steve, so safety performance is the top of the list of what matters most.
“I’m proud of our safety record, but those results really are a testament to our operations personnel. They live it every day and it shows in the tremendous strides we’ve taken to lower blood-lead levels, having multiple facilities reach over a million safe hours without lost-time incidents, and frequently winning Sentinels of Safety Awards.”
Born and raised in Pevely, Missouri, Steve shares the pride that employees and the community have about the area being home to one of the largest lead mining districts in the world. He enjoys celebrating the history with neighbors at local events, like Fall Rocks, and opening the mine for tours during Old Miners’ Days.
Steve earned a bachelor’s degree in mechanical engineering from the University of Missouri-Rolla (now Missouri University of Science and Technology).