 marvin john heemeyer (october 28, 1951 â june 4, 2004) was a welder and an automobile muffler repair shop owner most known for his rampage with a modified bulldozer. outraged over the outcome of a zoning dispute, he armored a komatsu d355a bulldozer with layers of steel and concrete and used it on june 4, 2004, to demolish the town hall, the former mayor's house, and other buildings in granby, colorado. the rampage ended when the bulldozer got stuck in the basement of a gambles store he had previously destroyed. heemeyer then killed himself with a handgun. heemeyer had been feuding with granby officials, particularly over fines for violating city ordinances and a zoning dispute regarding a concrete factory constructed opposite his muffler shop. ==background== heemeyer lived in grand lake, colorado, about  away from granby. according to a neighbor, heemeyer moved to town over 10 years prior to the incident. heemeyer's friends stated that he had no relatives in the granby-grand lake area. john bauldree, a friend of heemeyer, said that heemeyer was an enjoyable person. ken heemeyer said his brother "would bend over backwards for anyone". while many people described heemeyer as a likable person, others told a different story. christie baker said that heemeyer threatened her husband after he refused to pay for a faulty muffler repair.{{cite news |title='something snapped': suspect called emotional, angry over rezoning fight |last=ingold |first=john |author2=brittany anas |author3=howard pankratz |date=june 6, 2004 |work=the denver post |pages=a01 |quote='he has threatened my husband's life,' resident christie baker recalled. 'he threatened my husband over a muffler.' baker said she and her husband, doug, had taken a truck to heemeyer's shop, and he installe
1951_births 2004_crimes_in_the_United_States 2004_deaths American_criminals Criminals_who_committed_suicide Improvised_armoured_fighting_vehicles People_from_Grand_County,_Colorado Rampages Suicides_by_firearm_in_Colorado