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Polycrystalline potash, with a U.S. penny for reference. (The coin is 19 mm (0.75 in) in diameter and copper in color.)
Polycrystalline potash, with a U.S. penny for reference. (The coin is 19 mm (0.75 in) in diameter and copper in color.)
The first U.S. patent was issued for an improvement "in the making of Pot ash and Pearl ash by a new Apparatus and Process"; it was signed by then Pre
The first U.S. patent was issued for an improvement "in the making of Pot ash and Pearl ash by a new Apparatus and Process"; it was signed by then President George Washington.
A covered hopper car in a Canadian train for shipping potash by rail.
A covered hopper car in a Canadian train for shipping potash by rail.
Global imports/exports of potash in 1937
Global imports/exports of potash in 1937
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Potassium pearls (in paraffin oil, ~5 mm each)
Potassium pearls (in paraffin oil, ~5 mm each)
Sir Humphry Davy
Sir Humphry Davy
Pieces of potassium metal
Pieces of potassium metal
Potassium in feldspar
Potassium in feldspar