Alva Review-Courier -

WARSAW, Poland (AP) — Three miners have been killed in a tremor that hit a coal mine in southern Poland and six others have been hospitalized.

Tomasz Glogowski, spokesman for the Polish Mining Group, or PGG, a company in Katowice, said the quake occurred shortly after 2 p.m. local time Monday some 720 meters (2,362 feet) underground at the Murcki-Staszic mine, causing a massive cave-in. The quake's magnitude was 2.66 on the Richter scale.

Glogowski told The Associated Press that three of the nine miners who were working in that zone died while three others managed to escape and the remainder w...