Task: Text Simplification
Input (English): history arch mineral corporation was founded in 1969 as a partnership between ashland oil -lrb- now ashland , inc . -rrb- and the hunt family of dallas , texas.
Output (English): ashland oil -lrb- now ashland , inc . -rrb- and the hunt family -lrb- of dallas , texas -rrb- founded history arch mineral corporation in 1969.