NIOSH Mining Training Exercise


Sammy's Loose Roof Decisions

June 1989

See also: NIOSH mining products
Type: View-Master® with Invisible Ink Exercise
Audience: Underground coal miners
Length: 8 questions
Skills Reviewed: Hazard recognition, Roof and rib hazards, Methods for control of cutter roof

During your routine survey work as a transit-man, you observed in recent weeks that an idle section in 2 North mains, about 3 miles from the portal, has been experiencing serious roof problems. You were told by one of the mine engineers that the problems are due to the sudden presence of slips in the roof running in the direction of mining. Several falls and significant downtime have forced the company to reconsider the development of 2 North. On this particular day, the general superintendent informs you and Sammy that the company decided to reactivate the idled section beginning next shift. You are to enter the mine and set sights in 2 North to re-orient all the entries by 45 degrees to the east before the regular daylight crew arrives. You are beginning your work when you notice a section of top lower than the surrounding area. You must decide whether this is a problem that can wait or if it should be taken care of immediately.

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.
3-D ReelsĀ  1 for each trainee. Purchase from MSHA (http://www.msha.gov/Education&Training.htm, MSHAdistributioncenter@dol.gov).
View-Master® 1 for each trainee. Purchase from your local toy store or directly from the manufacturer at Fisher-Price, Inc., View-Master Custom Sales, Customer Service, 636 Girard Avenue, East Aurora, NY 14052, phone 716-687-3899.
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
Content Source: National Institute for Occupational Safety and Health (NIOSH) Mining Division