PERMFILE65702

• Permit No: C1981044
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 16 MSHA ROOF AND VENTILATION PLANS
• Media Type: D
• Archive: No

• be made in the mining system that necessitates any change in the
roof control plan, the plan shall be revised and approved prior
to implementing the new mining system.
2. All personnel required to install roof supports shall be trained
by a qualified supervisor designated by mine management before
being assigned to perform such work. This training shall insure
that such persons are familiar with the functions of the support
being used, proper installation procedures, and the approved
roof control plan.
Supervisors in charge and miners who install supports shall be
informed of an approved rcof control plan and any changes in a
previously approved roof control plan not later than their first
working shift following receipt of the approved plan. As soon
as possible but no later than three weeks after receipt of this
approved plan, all provisions contained herein shall be fully
explained to all miners whose duties require them to be on a
"working section". All new miners shall have the hazards of
mine roof and ribs and the content of this plan explained to
them before they start to work.
3. (a) Upon completion of the loading cycle, a warning device will.
be conspicuously placed to warn persons approaching the area
that it is not permanently supported. It is to be emphasized
that the warning device has been placed to cause the person to
• stop, examine, and evaluate the roof and rib conditions prior to
entering the area even after temporary supports have been
installed.
(b) Temporary supports shall be installed within 60 minutes
after the loading cycle is completed unless roof bolting
machines are equipped with acceptable automated temporary
supports.
(c) Only those persons engaged in installing temporary supports
shall be allowed to proceed beyond the last row of permanent
supports until temporary supports are installed. Before any
person proceeds inby permanently supported roof, a thorough
visual examination of the unsupported roof and ribs shall be
made. If the visual examination does not disclose any hazardous
condition, persons proceeding inby permanent supports for the
purpose of testing the roof by the sound and vibration method
and installing supports shall do so with caution and shall be
within 5 feet of a temporary or permanent support. If hazardcus
conditions are detected, corrective action shall be taken to
give adequate protection to the workmen in the area involved.
4. When installing permanent supports, temporary supports may be
repositioned in the sequence indicated in Figure K-3. However,
if it is necessary to remove temporary supports (other than

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