Unattended Death and Biohazard Cleanup in Mangum, OK

Mangum is a city in and the county seat of Greer County in southwestern Oklahoma, served by U.S. Route 283 and State Highway 34.

Mangum was founded in 1882 by Henry Clay Sweet on land granted by Texas to A. S. Mangum, a veteran of the Battle of San Jacinto who had been rewarded with the land grant for his service.

Mangum began as part of Old Greer County, an area claimed by Texas until a U.S. Supreme Court ruling transferred it to Oklahoma Territory in 1896.

In its ranching days, local cowboys nicknamed Mangum "Tin City" because so many tin cans were unrolled and nailed down over the wooden planks that served as sidewalks.

The Great Western Cattle Trail, used from 1876 to drive Texas cattle north to market, passed near Mangum, and the town's post office was established on April 15, 1886.

A light bulb installed in a Mangum fire station around 1926–1929 burned for roughly nine decades and was recognized by Guinness World Records as the world's fifth longest-lasting bulb before a power outage ended its run on December 13, 2019.

Mangum's population peaked at 4,806 in 1930, when the town supported seven cotton gins, a cotton oil mill, a cotton compress and a flour mill; at the 2020 census it had 2,762 residents in 1,127 households, about 68% of them owner-occupied.

The Old Greer County Museum and Pioneer Hall of Fame occupies a 1907 hospital building in Mangum and holds more than 60 rooms of pioneer artifacts.

Mangum hosts the annual Mangum Rattlesnake Derby each April, which combines a rattlesnake hunt with a festival and a large flea market.

On February 11, 2017, Mangum reached 99.4 °F, setting the Oklahoma state record high temperature for meteorological winter — just three days before snow fell on the town.