Montana earthquakes noted in pennsylvania mine‐water pools

A recent paper by daCosta [1959] reported water‐level fluctuations caused by the Montana earthquake of August 18, 1959, and mentioned the fluctuations registered in three mine‐water pools of the Northern anthracite field in northeastern Pennsylvania, ten miles north of Wilkes‐Barre. This paper will discuss the water‐level phenomena of these pools in more detail. Most of the coal mines near Wilkes‐Barre are idle, and ground water is forming extensive mine‐water pools in the underground mine openings. Some of the pools are interconnected by boreholes, tunnels, and other openings through the barrier pillars between adjacent mines.