Here are some -- sometimes strange -- fact we've learned in the aftermath of Sunday's track fire just south of Clark/Division station on the Chicago Transit Authority's Red Line:
The fire started when an electrical arc ignited curve greases used to reduce the screeching noise of wheels on the metal track.
CTA President Richard Rodriguez used the incident to plead for more capital dollars in improve the agency's aging infrastructure.
Though Tuesday's Trib report noted there are other ways to control friction between wheels and rails that don't involve the older curve-greaser technology.
The Tribune also reported how the smoke may have spread: "The operator of a Red Line train who reported a fire in the subway on
Sunday was told by the CTA control center to proceed through the smoky
tunnel after he told officials the fire had dissipated, the president of
the rail workers union said [Monday]. . . . But by passing over the fire, the train dragged smoke all over the
place,'' [union leader Robert] Kelly said."
Meanwhile, less than a day after the accident, some knucklehead exploded firecrackers around 1 pm Monday at State and Jackson on the Red Line. This caused another smoky scare, though no injuries.