sentences:  In 1929, a company named Verde Central opened what at first appeared to be another "great mine" about a mile southwest of Jerome.The labor situation in Jerome was complicated.Three separate labor unions—the International Union of Mine, Mill, and Smelter Workers (MMSW), the Industrial Workers of the World or IWW, and the Liga Protectora Latina, which represented about 500 Mexican miners—had members in Jerome.