| http://www.w3.org/ns/prov#value | - Improved and cheaper processes for mining trona from natural deposits are desired. [0003] Mining is an age-old approach for removing subterranean materials, e.g., trona, nahcolite, dawsonite, wegscheiderite, thermonatrite, pirssonite, natron, gaylussite, shortite, halite, and other salts, minerals, and so forth.
|
