A subsidiary of an Ohio-based coal company could provide at least part of the answer.
Powhatan Point, Ohio-based Ohio Valley Resources LLC, last month announced plans for a $1 billion nitrogen fertilizer plant in southern Indiana.
The plant would produce 2,400 tons of ammonia per day and 3,000 tons per day of the urea ammonia nitrate solution used in fertilizer.
The Indiana project still needs permitting approval, and construction likely will take about three years.
The new plant won't affect fertilizer prices any time soon, but over the next several years, that and other fertilizer and chemicals plants are likely to pop up throughout the country if domestic natural gas prices remain lower than the international rate.