NIOSH Mining Training Exercise


Man In the Bin

July 1989

See also: NIOSH mining products
Type: Invisible Ink Exercise
Audience: Coal preparation plant and persons who work around bins of granulated materials
Length: 13 questions
Skills Reviewed: Hazard recognition, Safe practices around bins, hoppers and stockpiles, Rescue procedures, First aid

You are the weigh master at the scales at the truck dumping bins at a preparation plant. Jake, a truck driver, raises the bed of his truck to dump a load in a bin. The load won't dump and the truck bed won't come down. The bin appears to be full. Jake climbs into the bin on top of the coal. Suddenly the bridge of coal collapses. The 20 tons of coal in the bed of the truck slides out and buries Jake in the bin. You must decide what to do to help him without risking your life or the lives of others.

Materials needed:
Instructor Copy
Problem Booklet 1 for each trainee. May be downloaded separately or duplicated from the Instructor´s Copy.
Answer Sheet 1 for each group of 3 or 4 working the exercise. Purchased from MSHA (http://www.msha.gov/Education&Training.htm, MSHAdistributioncenter@dol.gov). You may also duplicate them locally if you or a local print shop have the ability to print invisible ink.
PENIB Developing Pens 1 for each answer sheet. Order from SICPA, Customer Service, 8000 Research Way, Springfield, VA 22153, Phone 1-888-SICPAUS or 1-888-742-7287, pen # "PENIB", a broad tipped developing pen.
Optional Overhead projector and overheads of the Master Answer Sheet and Scoring Key found in the Instructor's Copy.
Page last updated: September 17, 2008
Page last reviewed: May 30, 2008
Content Source: National Institute for Occupational Safety and Health (NIOSH) Mining Division