Sign Up for a Free Account

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

Sign Up for a Free Account For information on discounts, see Plans & Pricing

  • 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.

Woman fettling (finishing, polishing) dry, unfired clay tile

Note the down-draft exhaust ventilation for tile fettling by hand in a West Virginia pottery factory. Fettled (ie, finished, polished) ware is placed in saggers (ie, protective fireclay boxes enclosing ceramic ware while it is being fired) at right. (Source: CDC/Barbara Jenkins, NIOSH, 1936. Flinn RH. Neal PA, Reinhart WH, Dallavalle JM. Fulton WB, Dooley AE. Chronic manganese poisoning in an ore-crushing mill. Public Health Bulletin 1940;247:1-77. Public Health Image Library, Centers for Disease Control and Prevention, Atlanta, Georgia. Public domain.)

Related Article

Related Media