Finns use pig slurry to clean polluted pond
Finnish engineers have poured pig manure into a contaminated pond next to an old mine, saying the bacteria in the slurry will clean up metals in the water. Mining company Outokumpu dumped 450 cubic
Finnish engineers have poured pig manure into a contaminated pond next to an old mine, saying the bacteria in the slurry will clean up metals in the water. Mining company Outokumpu dumped 450 cubic