Sign Up for a Free Account

This is an image preview.
Start a Free Account
to view the full image.

  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

  • Every article is reviewed by our esteemed Editorial Board for accuracy and currency.

  • Full spectrum of neurology in 1,200 comprehensive articles.

  • Listen to MedLink on the go with Audio versions of each article.

Mine workers loading lead ore

Loading lead ore at a mine near Creede, Colorado. Creede had been an important lead-producing center in the 19th century but was for many years a "ghost town" until lead mining resumed during World War II to produce metal needed for the war effort. (Source: Photograph by Andreas Feininger [1906-1999], December 1942. U.S. Office of War Information. Courtesy of the U.S. Library of Congress, Washington, D.C.)