IMMIGRANTS IN INDUSTRIES. COPPER MINING AND SMELTING. This report, which was prepared under the direction of the Commission by W. Jett Lauck, superintendent of agents, forms part of the general report of the Immigration Commission on immigrants in industries. 2 Period of residence in the United States of foreign-born employees and members of their households... Racial classification of employees at the present time. Industrial condition abroad of members of immigrant households studied... Principal occupation of immigrant employees before coming to the United General occupation of males at the present time in the households studied... General occupation of women at the present time in the households studied.. 39 Period of residence in the United States of foreign-born employees. Relation between period of residence and earning ability. Hours worked per day and per week...... |