While considered light, both were centered directly beneath a region in northwestern part of the state near Fairview, Oklahoma, that produces significant amounts of oil and gas. (businessinsider.com)
Winfield, located in the northwestern part of the state, does have its own hospital — but, like many rural hospitals, it no longer offers obstetrical services, Avery says, so women in labor must travel about 60 miles to Tuscaloosa. (scientificamerican.com)
The late - 19th - century hand - drawn map below illustrates Pennsylvania's Venango County oil basin, and shows locations of wells throughout three counties in the northwestern part of the state. (collections.leventhalmap.org)