Meanwhile, environmental groups such as the Rainforest Action Network have applauded the banks' decisions to stop financing Massey's activities, and want shareholders to weigh in as well.
"Investors need to get on the right side of history and fund companies that produce energy sources that are clean, safe and renewable," said Nell Greenberg, a spokeswoman for RAN.
"As shareholders, the question becomes how many violations on safety and environment are they going to put up with?" said Kevin Grandia of desmogblog.com, a Vancouver-based nonprofit aimed at promoting clean energy awareness.
"There are plenty of companies that turn a profit without blasting the tops off mountains."