when the rivers run red

the stream near our house when I lived in coal country was blood red, from mine run off, even though the mine had been closed for a dozen years.

But how does one clean up this problem?

coolgreenscience article relates one program on cleaning up the environment.

Left: Bear Run before Phase 1 treatment. Right: Bear Run after Phase 1 treatment. Photo courtesy of Tom Clark / Susquehanna River Basin Commission