Boulder County Latino History
Boulder County Latino History
Teaching Our Stories
  • Home
  • About Us
    • About Us
    • Contact
    • Donate
  • Lessons & Resources
    • Lesson Database
    • Oral History Interviews Clips
    • Workshop Video Gallery
    • Spanish Resources
  • Primary Sources
    • Primary Source Sets
    • Primary Source Analysis Tools
    • Full Collection of Primary Sources
  • Books
    • About the Books
    • Book Outline with Teaching Links for Volume I: History and Contributions
    • Book Outline with Teaching Links for Volume II: Lives and Legacies
    • Download the Books
    • About the Author
    • Order Printed Books
  • Other Places
    • Generic Toolkits for Communities, Schools and Teachers
    • Generic Lesson Plans for All Communities
    • Resources for Other Communities
  • Home
  • Primary Source Sets
  • Labor Unions and Strikes, 1910-1935

Labor Unions and Strikes, 1910-1935

This resource discusses labor union activity among Boulder County’s coal miners, 1910-1935, including strikes and violent repression, and a surprising strike by beet workers in 1932.

Full Text PDF: Chapter 4: Conflict, Racism, and Violence, 1910-1940

18 Mexican Beet Field Picketers Given Jail Terms, 1932, p. 1

February 9, 2016 / Mary Ellen Graziani /

View Collection Item

Read More

24 More Agitators, Mainly Mexicans, Arrested, 1932

February 9, 2016 / Mary Ellen Graziani /

View Collection Item

Read More

8000 Colorado Miners On Strike

February 9, 2016 / Mary Ellen Graziani /

View Collection Item

Read More

First Arrests in Beet Strike, 1932

February 9, 2016 / Mary Ellen Graziani /

View Collection Item

Read More

Josephine Roche Speaks Tonight, 1932

February 9, 2016 / Mary Ellen Graziani /

View Collection Item

Read More

Salazar, Jose Benito and Isabelle (Part 2)

February 9, 2016 / Mary Ellen Graziani /

View Collection Item

Read More

The Columbine Incident (Part 1)

February 16, 2016 / Mary Ellen Graziani /

View Collection Item

Read More

The Columbine Incident (Part 2)

February 9, 2016 / Mary Ellen Graziani /

View Collection Item

Read More

Historian Comments

The years between 1910 and 1932 saw considerable activity by labor unions in eastern Boulder County, as was true in much of the state and country. Union organizers tried to gain members and mobilize them to act as a group in demanding better working conditions and higher wages from employers. If their conditions were not met, unions called strikes, in which their members refused to go to their normal jobs and formed picket lines to keep outsiders from stepping into their places. In the Boulder area, unions were most active among coal miners, but in 1932 beet workers also went on strike, one of the earliest farmworkers’ strikes in Colorado history. At least some of the striking miners were Latinos, and the “agitators” who organized the beet workers were largely “Mexican.” Tension over unionization was particularly high in the 1930s, due to the Great Depression. Owners and operators of coal mines, Great Western Sugar, and the farmers who grew beets all saw their profits decline and were therefore eager to cut labor costs, by lowering wages or laying off workers. Miners and sugar beet workers claimed they could not support their families on the reduced pay that was offered to them, yet many hesitated to make too much trouble for fear they would lose their jobs entirely and not be able to find other employment. This topic describes the strikes that occurred within Boulder County, in several of which troops were brought in to protect the mines and “scab” workers. A strike in 1914 was related to the “Ludlow Massacre” in southern Colorado, and in 1927 the Colorado State Rangers, a militia force, opened fire on people participating in a large protest at the Columbine Mine near Lafayette, killing 6 and wounding 60 others.

Teaching Boulder County Latino History is an extension of the Boulder County Latino History Project. This site provides resources for those interested in teaching Boulder County Latino History. The teaching resources are grounded in the books written by CU Boulder’s Distinguished Professor Marjorie McIntosh.

There are three central components to this site. The Lesson Database provides lessons for K-12 teachers. Each lesson uses primary sources and is grounded in the books by Prof. McIntosh. Beyond the curated lessons teachers are encouraged to explore the Primary Source Sets and access the full text of Prof. McIntosh’s books. The book outlines link lesson plans and primary sources to each chapter. Teachers and students are welcome to download all or parts of the books to support their learning.

Our Work

Lesson Topics

Businesses Celebrations/ ceremonies Children Civil rights activity Culture/ identity issues Deportation Education/ schools Employment, manufacturing/ unskilled Employment, professional/ skilled Families Farm work/ agriculture/ ranching Food/ cooking Government/ government programs/ laws Health/ medicine/ healing Houses/ living places Immigration Interviews done in 2013 Labor unions/ strikes Languages (Spanish and English) Mexico/ Mexicans Migrant workers Mining Music/ dancing/ art/ recreation Neighborhoods New Mexico/ New Mexicans Organizations/ clubs Police/ Sheriffs/ I.C.E. officials Political or community participation Quantitative information Racism/ discrimination/ segregation Religion/ churches Soldiers/ wars/ veterans Sports/ outdoor activities Transportation/ cars University of Colorado/ college students Women Work done by women and children

© 2025 Boulder County Latino History

CU School of Education

CU Office for Outreach and Engagement/ University of Colorado Boulder

The Colorado Health Foundation
Top