4th Grade Unit 1 Assessment

U.S. inspectors check the safety of coal mines in Kentucky across the country.

Coal mines in the United States had the lowest inury rate ever in 2013.

A belt used to carry coal was broken.

Each year the U.S. Mine Safety and Health administration does many safety checks.

Since 1969 the government has been checking coal mines across the country.

Today mines have fewer accidents than in the past.

Accidents happened often.

Many minors ended up with black lung disease from breathing in the coal dust.