From herbfire.com:

US  STEEL  CORP.  SL75  ladder  truck

JOB# HS-7562 
Gary, IN
#chicagoareafire.com; #FireTruck; #Sutphen; #SL75; #USSTeel; #GaryWorks;
#chicagoareafire.com; #FireTruck; #Sutphen; #SL75; #USSTeel; #GaryWorks;
#chicagoareafire.com; #FireTruck; #Sutphen; #SL75; #USSTeel; #GaryWorks;
#chicagoareafire.com; #FireTruck; #Sutphen; #SL75; #USSTeel; #GaryWorks;

thanks Matthew