“If not flushed regularly the bacteria slimes and manganic oxide sediments accumulate in the pipes.”

“The acid converts the manganic hydroxide to manganic sulfate.”

“It is produced by igniting manganous carbonate, or manganic oxide, or manganic peroxide.”

“By neutralising concentrated acetic acid with manganous carbonate, and evaporating the solution so that crystals may form.”

“Formed by adding potassium hydrate to manganous sulphate, and filtering and drying the precipitate in vacuo.”

“With oxygen it probably forms manganous oxide, which is less harmful than ferrous oxide.”

“Supergene, manganiferous clay umbers are intimately associated with both the iron and barite deposits.”

“Of much more importance are the manganiferous and the silver manganiferous ores, which are much the richest of the country.”

“Overlying grey-green, locally manganiferous mudrock is assigned to the Beaverbank Formation.”