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Robert Eugene “Bob” Yonts, 90, passed away on April 25, 2026, after a short illness in Casper, Wyoming, where he had resided for more than 37 years.
Bob graduated from Byron High School and continued his education at Northwest Community College and the University of Wyoming, where he earned a degree in Petroleum Engineering. He went on to build a long and successful career with Conoco, dedicating 37 years to the company.
In 1956, Bob married Shirley Ann Schrage, and together they spent 30 years building a loving family. Throughout his career, Bob and his family lived in many places, including Thermopolis and Casper, Wyoming; Billings, Montana; Lake Charles and Lafayette, Louisiana; Houston and Midland, Texas; including spending extended time in Dubai, UAE. Unfortunately, Bob lost Shirley at the age of 49 to cancer.
In 1993, Bob found love again and married Barbara Sigler. Together they shared more than 30 years filled with adventure and companionship. Bob and Barbara enjoyed Wyoming’s outdoors, spending time fishing, hunting and bird watching, as well as traveling across the United States and abroad, including trips to Alaska, Australia and New Zealand. They were also known for hosting memorable gatherings in their Casper home.
Bob had a deep appreciation for nature and conservation. He served as chairman of the board of directors for the Audubon Wyoming Society and generously gave his time and resources to organizations such as the United Way, the American Cancer Society, and the Murie Audubon Society.
Bob is survived by his sons, Clint (Tami) Yonts, Calvin (Susanne) Yonts, both of Midland, Texas, and Craig Yonts of Casper, Wyoming; his daughter, Lucinda “Cindy” Pope of Levelland, Texas; and his stepson, Mark Sigler of Weatherford, Texas. He is also survived by his sisters-in-law, Diana Krahenbuhl of Tampa, Florida, Kathy Yonts of Scottsbluff, Nebraska, and Peggy Yonts of Grant-Valkaria, Florida; 14 grandchildren; 17 great-grandchildren; and numerous nieces and nephews.
He was preceded in death by his parents, Harold and Eva Yonts; his wives, Shirley Schrage Yonts and Barbara Sigler Yonts; his brothers, Larry, Dean and Delmer Yonts; and his sister, Linda Pangburn.
Bob will be remembered for his love of the outdoors, his generosity, and his dedication to family, friends and community.
Funeral services will be held Friday, May 1, at Bustard & Jacoby Funeral Home in Casper, Wyoming. A viewing will take place at 9 a.m., with services following at 10 a.m. A reception will be held at Best Western, 651 Granite Peak Dr, Casper, WY 82609, after the service. A graveside service will be held in Powell, Wyoming, at 11 a.m. on Saturday, May 2.
In lieu of flowers, the family kindly requests that donations be made to the Murie Audubon Society and the American Cancer Society.
