Nitrogen producer LSB Industries Inc., Oklahoma City, reported a third-quarter net loss of $30.8 million on revenue of $75.5 million versus the year-ago loss of $26.1 million and $79.8 million, respectively. While losses grew and revenue was down, the company said adjusted EBITDA was up at $11.1 million from $10.6 million as a result of lower natural gas prices, higher production and lower overall costs.