Dick Weller is a licensed contractor and founder of Dick Weller Construction. He was operating on land outside Yellowstone. Over 2 decades prior to the start of the show, he was preparing to break ground and started using a dangerous pesticide to deal with the weeds due to the difficulty to get a bulldozer in the area. His pesticide went up creek, not only killing the fish, but John Dutton's cattle. John confronted him and he claimed he was licensed to spray out there. Later, John's ranch hands trespassed on the ground, destroyed some of his equipment and stole some of the pesticide. They later snuck on his property and sprayed his yard and trees with the very poison he used and when he went outside to see what was happening, he was knocked unconscious. He woke up the next morning to not only find his grass and tree dead along with some critters, but he began getting a bad reaction to the pesticide. He ran back inside to shower up and get the poison cleansed from him but the toxin was unbearable. It is unclear if he survived afterwards.