Emergency services were called to the Drayton coal mine near Muswellbrook in Australia’s New South Wales state after an explosion, the Newcastle Herald reported.
Police said two workers suffered abdominal injuries, according to the newspaper. Paramedics and a rescue helicopter were called to the scene.
The mine is operated by Anglo American Plc, whose Brisbane-based spokesman Aldo Pennini couldn’t immediately be reached for comment.
The mine produces about 5.5 million metric tons of power station coal a year and employs about 300 workers, according to Anglo American’s website.