FRC Block

FRC Block

Burrell FRC Blocks are manufactured with controlled blending, mixing and forming techniques to assure a uniform dispersion of nylon fibers throughout each block.
Quality controlled batching, mixing and pouring, designed to meet or exceed Bureau of Mines standards and testing by independent laboratories assure constant strength control
Burrell FRC Blocks are better able to take slack in the mine roof, greatly reducing the roof-to-floor closure, without failure
Burrell FRC Blocks use less space to obtain equal support, using fewer cribs allows more area of movement for personnel, equipment and reduces air resistance.

Features

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Materials

Cribbing, constructed with the superior strength and stiffness of FRC Blocks are better able to take slack in the mine roof, greatly reducing the roof-to-floor closure, without failure.

Sizing

Timber has a compressive strength of 500 PSI. FRC Blocks have an individual strength of 5,200 PSI and when installed in a crib configuration develop 4,000 PSI.