1. Northern Border Pipeline
20619 285th Ave, Harper, IA 52231
Coordinate: 41.35399,-92.05311
Phone: (641) 635-2009
2. Natural Gas Pipeline Company of America (NGPL)
20743 285th Ave, Harper, IA 52231
Coordinate: 41.35327,-92.05311
Phone: (641) 635-2431
3. Buckeye Partners Lp
20332 270th Ave, Harper, IA 52231
Coordinate: 41.37283,-92.03876
Phone: (641) 635-2440