CHICAGO HEIGHTSâ(ENEWSPF)âOctober 8, 2014. The Prairie State College (PSC) Natural Science Department is hosting the South Suburban Earth Science Club Fossil, Gem, Mineral, and Jewelry Show from 10 a.m. to 5 p.m., Saturday and Sunday, October 18 and 19, in the Prairie Center Gym on PSCâs main campus at 202 S. Halsted St. in Chicago Heights.
