Whakaotihia te rerenga e whai ake nei: I tuhia e Joe Zentner nga putake o te kaupapa whakatairanga i runga i te paetukutuku Desert USA i roto i te "Twenty Mule Teams on the move in Death Valley". Ko Bill Parkinson, he kaitiaki mo te po mo te kamupene, me ako wawe me pehea te whakahaere i te roopu i te wa i whakawhiwhia ai ia ki te mahi a "Borax Bill". Ko ia te tuatahi, engari ehara ko ia te whakamutunga, he taraiwa e mohiotia ana e taua ingoa. Ko te
Ko te 1904 St. Louis World's Fair te ahua tuatahi mo te roopu, a he angitu i haere a Parkinson ki te haerenga.