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Global day of action against child labor highlights plight of 215 million children

Niranjan Shrestha / AP

An Indian migrant boy works in a sari factory on World Day Against Child Labor in Katmandu, Nepal, on June 12, 2012.

Tuesday, June 12 has been designated World Day Against Child Labor by the International Labour Organization (ILO). The day aims to serve as a catalyst for the growing worldwide movement against child labor.

According to figures cited by the ILO, the most recent estimates suggest 127 million boys and 88 million girls are involved in child labor with 74 million boys and 41 million girls in the worst forms.

Navesh Chitrakar / Reuters

A schoolgirl holds a placard during a rally organized to mark World Day Against Child Labour, in Kathmandu, Nepal on June 12, 2012. The placard reads, "Do not use children as labourers in your houses."

Jorge Dan Lopez / Reuters

A girl covers her face near the road to Mazatenango, where she fills holes in the road with earth in exchange for money, about 100 miles north of Guatemala City, on June 11, 2012.

Niranjan Shrestha / AP

An Indian migrant boy works in a sari factory in Kathmandu, Nepal, on June 12, 2012.

NBC News' Chief Foreign Correspondent Richard Engel traveled 120 feet underground into a Malian artisanal gold mine.  The primitive gold pits are using child labor and a dangerous process involving mercury to find the precious metal that may end up in jewelry worn by Americans and people throughout the world.