▁because ▁their ▁micro scop ic ▁sil ica ▁scales ▁( ph it ol ith s ). ▁ ▁An ▁early ▁industrial ized ▁sc our ing ▁pow der ▁was ▁Bon ▁Am i , ▁launched ▁in ▁ 1 8 8 6 ▁by ▁the ▁J . T . ▁Robert son ▁So ap ▁Company ▁as ▁a ▁gent ler ▁alternative ▁to ▁quart z - based ▁sc our ing ▁pow ders ▁then ▁available ▁on ▁store ▁sh el ves . ▁ ▁Another ▁early ▁commercial ▁brand ▁was ▁V im ▁( 1 9 0 4 ), ▁one ▁of ▁the ▁first ▁products ▁created ▁by ▁William ▁Le ver . ▁ ▁The ▁ab ras ive ▁was ▁obtained ▁from ▁sand stone ▁m ined ▁at ▁the ▁Camb rian ▁Qu ar ry ▁at ▁G wer nym yn y dd ▁between ▁ 1 9 0 5 ▁and ▁about ▁ 1 9 5 0 . ▁ ▁The ▁brand ▁is ▁still ▁market ed ▁in ▁some ▁countries , ▁but ▁Un ile ver ▁has ▁been ▁replacing ▁it ▁with ▁J if ▁and ▁then ▁C if . ▁ ▁Sc our ing ▁pow ders ▁have ▁been ▁market ed ▁with ▁many ▁other ▁companies ▁and ▁brand ▁names , ▁such ▁as ▁Ajax , ▁Bon ▁Am i , ▁Rad ium , ▁Com et , ▁S ano , ▁and ▁Z ud . ▁ ▁References ▁ ▁Category : C lean ing ▁products <0x0A> </s> ▁A ▁constitution al ▁refer endum ▁was ▁held ▁in ▁American ▁Sam oa ▁on ▁ 6 ▁November ▁ 2 0 1 8 , ▁alongside ▁general ▁elections . ▁The ▁proposed ▁constitution al ▁am end ment ▁would ▁allow ▁the ▁F ono ▁to ▁override ▁the