These screws were fused together in the heat of the Chicago Fire of 1871.
These screws help document the Great Chicago Fire of 1871, a pivotal moment in the city's history. Beginning the evening of October 8th, the fire burned for 36 hours, destroyed three and a half square city miles, and killed 300 Chicagoans. The heat was intense enough to melt metal. After the fire ended, work crews and ordinary residents found and saved items like these screws as reminders of the fire's devestation.