In all, some 40 tons of slow-release calcium pellets were dropped over a 29-acre watershed in October 1999, and the experiment has been running ever …
Coal’s ‘absolutely massive’ environmental catastrophe
In all, some 40 tons of slow-release calcium pellets were dropped over a 29-acre watershed in October 1999, and the experiment has been running ever …
Coal’s ‘absolutely massive’ environmental catastrophe
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