The following table and charts show the number and percentage of male employees of each race for whom information was secured:

TABLE 6. Male employees for whom information was secured, by general nativity and

race.

THE PREPARATION OF THE REPORT.

In preparing the data collected for publication two general divisions have been observed, as follows:

Part I. General survey of the industry.

Part II. Study of the industry in Michigan.

The tabulations which appear in Part II are based upon the information secured for employees; those for Part I include both employees and households. Four separate tabulations for the Tennessee mining employees have also been made and appear in Part I.

History of immigration-Period of residence in the United States of foreign-born employees and members of their households-Racial classification of employees at the present time-[Text Tables 7 to 11 and General Tables 4 and 5].

HISTORY OF IMMIGRATION.

No statistics which afford any insight into the racial movements to the several copper-mining districts or set forth the nativity or race of employees of the industry during past years are available. The racial movements to the copper mines of Tennessee have occurred within the past few years and have been the result of the efforts of the operators in that region to attract immigrant employees in order to meet the demand for labor growing out of the extension of mining operations and the inadequacy of the native labor supply. The history of immigration to the Michigan copper-mining range is set forth in detail in Part II of this report."

PERIOD OF RESIDENCE IN THE UNITED STATES OF FOREIGN-BORN EMPLOYEES AND MEMBERS OF THEIR HOUSEHOLDS.

The character of recent and past immigration to the copper mines may be readily seen from the series of tabulations which follows, showing the period of residence in the United States of foreign-born mine workers and members of their households. Length of residence in this country and period of employment are not necessarily identical but they closely approximate each other. The first table and chart submitted embrace the same data as the table following but present it in a more summary form. All the employees with a period of residence of less than five years appear in one group.

TABLE 7.-Per cent of foreign-born male employees in the United States each specified number of years, by race.

(STUDY OF EMPLOYEES.)

[By years in the United States is meant years since first arrival in the United States. No deduction is made for time spent abroad. This table includes only races with 40 or more males reporting. The total, however, is for all foreign-born.]