The Mexican mining journal . ch. 1915. TABLE II EXPORT DUTIES ON TIN BARS ANDCONCENTRATES. EXPORT DUTY PER 100 KILOGRAMS TIN IN LONDON On Concentrates On Bars Less than £100 B 2 [$] B [$] £ 100 to 110 Bs. Bs. 110 120 120 ,, 130 130 140 140 ,, 150 150 ,, 160 t t 160 ,, 170 170 ,, 180 180 „ 170 190 „ 200 200 ,, 210 ?» 210 ,, ,220 9 t 1 9 OQ 220 „ 230 10.— 230 ,, 240 240 „ 250 250 „ 260 260 „ 270 > > 270 280
The Mexican mining journal . ch. 1915. TABLE II EXPORT DUTIES ON TIN BARS ANDCONCENTRATES. EXPORT DUTY PER 100 KILOGRAMS TIN IN LONDON On Concentrates On Bars Less than £100 B 2 [$] B [$] £ 100 to 110 Bs. Bs. 110 120 120 ,, 130 130 140 140 ,, 150 150 ,, 160 t t 160 ,, 170 170 ,, 180 180 „ 170 190 „ 200 200 ,, 210 ?» 210 ,, ,220 9 t 1 9 OQ 220 „ 230 10.— 230 ,, 240 240 „ 250 250 „ 260 260 „ 270 > > 270 280 280 290 290 ,, 300 » f 300 and over V. Labor and Power. The population of Bolivia is sparse, and only 10%white, the remainder consisting of Indians and of half-breeds, known locally as cholos. Most of the work inthe mines is perfomed by Indians of the Aymará andQuichua nations, (See Figs. 5 and 6) while the respons-ible positions are usually held by Aymara Indians on Market Day. Indian labor of all ages and of both sexes is em-ployed in the mines and mills of Bolivia. The wagespaid to miners vary from B/sl to Bs4 and averageabout per day. ($ to $, averaging about$). Better results are usually secured when theIndians work on contract under strict supervision. Apernicious leasing system is wide-spread, by which thecontractor or pirquinero is permitted to mine as hechooses providing he sells all of his picked ore andconcentrates to the mine owner at a fixed rate. Underthis system, the mines eyes are soon picked out, and heavy expenditures are necessary to put the mine inshape for proper working once more.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectminesandmineralresou
