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Solved case · 1942

Catavi massacre

SOLVED
Updated
Updated Jul 14, 2026
Catavi mine, Llallagua, Potosí Department, BoliviaView on the map

The short answer

Catavi massacre in brief

On 21 December 1942, Bolivian government forces fired on striking miners and their families at the Catavi mine, killing at least 19 people according to the official count, while workers' estimates reported up to 400 deaths.

Key facts

Year
1942
Place
Catavi mine, Llallagua, Potosí Department, Bolivia
Status
SOLVEDSolved
Victim
María Barzola
Outcome
No conviction on file

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The case file

What happened

Background

In the late 1930s, Bolivia's workers' movement made nominal political gains following the political shifts that came after the Chaco War of 1932–1935. Left-wing political parties began to displace some traditional conservative forces in the Bolivian Congress, but the government of President Enrique Peñaranda continued to pursue conservative policies. A law establishing the right to collective bargaining had been passed under the earlier government of Germán Busch, but this apparent shift on labor issues had not been tested until the 1942 miners' strike. Bolivia had formally entered World War II on the side of the Allied Powers after the Japanese attack on Pearl Harbor in December 1941, and the Peñaranda government considered wartime strikes an unacceptable disruption of Bolivian production intended for the United States.

Workers at the Catavi mine lived in poor conditions, with families housed in company huts lacking running water or toilets, and multiple families often sharing a single room. Access to health care and education was limited.

The Massacre

In 1942, workers at the Siglo XX and Catavi mines presented a petition demanding a 100% wage increase. Mine management refused to negotiate, and union leaders called for a strike. The government responded by arresting union officials, and seven miners protesting these arrests were killed. In response, 7,000 miners went on a five-day strike from 15 December to 20 December 1942. On 21 December 1942, when mine workers marched toward the management offices, the Bolivian military surrounded the crowd and opened fire for six hours.

The official government report stated that 19 people were killed and 400 wounded. Workers themselves estimated that as many as 400 people died. Among the dead was María Barzola, who was later commemorated as a martyr of the labor movement.

Aftermath

The massacre caused an open rupture in the already deteriorating relationship between President Peñaranda and both moderate and radical reform parties in the Bolivian Congress. Congress subsequently initiated a censure motion in response to the massacre, which failed by a single vote.

7 dated entries · 1932–1942

Timeline

  1. Start of the Chaco War, which later produced political shifts affecting Bolivia's Congress.

  2. End of the Chaco War.

  3. Japan's attack on Pearl Harbor prompts Bolivia to formally enter World War II on the side of the Allied Powers.

  4. Siglo XX and Catavi mine workers present a petition demanding a 100% wage increase; management refuses to negotiate and union leaders call a strike. Government arrests union officials; seven protesting miners are killed.

  5. Beginning of a five-day strike by 7,000 miners.

  6. End of the five-day strike.

  7. Miners march toward management offices; Bolivian military surrounds the crowd and fires for six hours, killing an official count of 19 and wounding 400; workers' estimates report up to 400 deaths.

1 named in this file

People

Victims first. Every legal label is set from public records and court outcomes, not from the prose.

  • María Barzola

    VICTIM

    Killed during the 21 December 1942 massacre; later commemorated as a martyr of the Bolivian labor movement.[3]

3 cited

Sources

Coverage is not a source: every fact in this file rests on the records below.

  • 2 Press
  • 1 Encyclopedic
  1. Contemporaneous coverage — search.worldcat.org

    Presssearch.worldcat.orgAccessed Jul 7, 2026

  2. Catavi massacre

    EncyclopedicWikipediaAccessed Jul 7, 2026

Trust

Record history

First published
Jul 7, 2026
Corrections
None

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