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Patent Snapper Spray

Innovators in mining, rock drilling, dust and Ignition
    suppression technology; precision machinists

MINING & TUNNELLING

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Minnovatino Racing

ETA Trepanner Tool

Minnovation offer two diameters of trepanner tool ( as known in UK Coal "Tin Busters").
 
The trepanner tooling has been developed to create a smooth hole through the skin of corrugated sheet tin lining in an underground roadway for drilling & installing additional roof bolts without having to disturb the sheeting.
 
A small hole is penetrated through the tin sheet with the central carbide drill which then acts as a guide so the larger diameter hole can be formed by the larger diameter carbide edged coring portion.
 
Other diameters can be provided.
 
Click on images for more information.

Available Parts.

Minnovation Part NumberProduct Description
733204" Trepanning Tool
732875" Trepanning Tool