Alliance Resource Partners (ARLP) reported Q4 earnings Monday of $0.12 per diluted limited partner unit, down from $0.88 a year earlier.
Analysts polled by FactSet expected $0.61.
Revenue for the quarter ended Dec. 31 was $590.1 million, compared with $625.4 million a year earlier.
Analysts surveyed by FactSet expected $633.6 million.