This paper traces the history of Mexican American workers in Arizona's copper mining industry, examining the systemic discrimination and segregation they faced despite their essential labor. Beginning with mass recruitment in the early 1900s, Mexican miners endured harsh working conditions, wage discrimination, and complete social exclusion in company towns. The paper documents key labor uprisings—including the 1903 Clifton-Morenci strike and subsequent actions—as well as the formation of mutual aid societies and eventually formal unions. It addresses the devastating impact of Depression-era repatriation and the continued struggles of Mexican American veterans returning from World War II. Ultimately, the paper demonstrates how persistent organizing and collective action led to significant gains in worker rights, benefits, and wage equality by the mid-20th century.
Mexican American workers became essential to the copper mining industry in Arizona, initially valued precisely because they were willing to perform dangerous work for minimal wages. Thousands of Mexicans were brought to Arizona to work the mines, and within a few years, the mining town of Clifton-Morenci grew from two hundred residents to ten thousand. This rapid expansion was driven by copper's increased value following the advent of electricity and the spread of technology throughout the nation. Despite their critical role in this economic boom, Mexican American workers faced profound discrimination and segregation. While they saw themselves as Americans and hoped to prove their belonging to the rest of the country, the reality they encountered told a different story.
The working conditions in the mines were brutal for all laborers. Miners worked twelve hours a day in the dark underground with temperatures reaching up to 104 degrees Fahrenheit. Although Mexican workers were accustomed to harsh mining conditions from prior experience, they were not prepared for discrimination based solely on their ethnicity. Mexican miners were systematically paid half as much as white miners, a wage gap justified by stereotypes portraying them as naturally subservient.
Discrimination extended far beyond the mine shafts. In the mining towns, Mexican workers were not allowed to enter club facilities or associate with white workers. Housing segregation was especially stark: Mexican families lived on the most undesirable plots of land, usually on steep hillsides, in houses constructed from scrap lumber. These segregated communities had no running water or electricity, whereas white mining families enjoyed modern conveniences. This complete system of exclusion—economic, social, and residential—created distinct parallel societies within single towns.
In response to these conditions, a sense of community began to form among Mexican workers. They established mutual aid societies, voluntary organizations that provided financial and social support to members facing hardship. These societies became the foundation for collective action and solidarity. Meanwhile, white workers formed unions driven by fear that Mexican laborers would displace them because they worked for such lower wages. White unions launched campaigns to drive Mexicans out of the mining industry, successfully pressuring the company to reduce working days from ten to eight hours—a change that primarily benefited white workers.
On June 3, 1903, over one thousand Mexican workers went out on strike to demand fair treatment and wages. The company refused to negotiate. Undeterred, Mexican miners shut down operations, and the strike quickly grew to over two thousand workers. The scale of resistance alarmed authorities so much that the governor of Arizona requested cavalry support from the president. However, a devastating flood wiped out the Mexican side of town, forcing miners to end the strike. The workers were subsequently placed under martial law, and the strike ended in defeat—but it would not be the last.
The discrimination Mexican workers faced extended across the U.S.-Mexico border. On June 2, 1906, Mexican miners in Mexico went on strike in solidarity with their counterparts in Arizona. Company officials and government operatives from both Mexico and Arizona confronted strikers violently, resulting in a firefight that killed twenty-three people. This tragedy became a pivotal moment, giving rise to the next Mexican Revolution and galvanizing international labor consciousness.
The industrial union known as the IWW (Industrial Workers of the World) emerged to fight for the rights of all workers, with particular attention to immigrant miners. Under IWW leadership, the next major strike drew over four thousand workers united in demanding higher wages and an end to the dual wage system that paid Mexican workers at a fraction of white workers' rates. The company responded brutally, driving over two thousand strikers from their homes and out of the towns. This mass expulsion was later recognized as a violation of both state law and the U.S. Constitution.
After the Great Depression began, Mexican Americans became the scapegoat for the economic crisis. A repatriation campaign was launched that forcibly deported thousands of Mexican Americans to Mexico, many of whom were U.S. citizens. This policy of ethnic cleansing devastated communities and erased years of hard-won gains in employment and settlement.
"Forced deportation and wartime contributions"
"Postwar strike success and wage equality achieved"
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