Linked from
The 5 pages that link to Potash mining, each with the reason it gives.
EvaporiteRelated: Evaporite sequences are a major source of commercially mined potash.
SylviteRelated: Mining sylvite supplies much of the world's potash.
Canadian PrairiesRelated: Saskatchewan’s potash deposits make mining a major prairie industry.
KainiteRelated: Mining recovers kainite from evaporite deposits alongside other potash minerals.