LETTER: Sludge: The ‘cart’ has already bolted

"The PMU (Project Management Unit) have yet to substantiate claims of safety with peer-reviewed, long-term studies of the impacts of disposing of aluminium sludge to agricultural soils (let alone in the tropics)."

"The PMU (Project Management Unit) have yet to substantiate claims of safety with peer-reviewed, long-term studies of the impacts of disposing of aluminium sludge to agricultural soils (let alone in the tropics)."