Alum, natural, mining and/or beneficiating

Borate, natural, mining and/or beneficiating

Borax, crude, ground or pulverized, mining and/or beneficiating

Boron compounds prepared at beneficiating plants

Boron mineral mining and/or beneficiating

Colemanite mining and/or beneficiating

Glauber's salt mining and/or beneficiating

Kernite mining and/or beneficiating

Muriate of potash, mining

Potash mining and/or beneficiating

Potassium bromide, natural, mining and/or beneficiating

Potassium chloride mining and/or beneficiating

Potassium compounds prepared at beneficiating plants

Potassium compounds, natural, mining and/or beneficiating

Potassium salts, natural, mining and/or beneficiating

Probertite mining and/or quarrying

Salines (except common salt) mining and/or beneficiating

Soda ash mining and/or beneficiating

Soda ash, natural, mining and/or beneficiating

Sodium borates, natural, mining and/or beneficiating