Sandvik Mining and Construction Oy

Voest-alpine Bergtechnik Gesellschaft M.b.h.

Manfred Meier

Karl Lerchbaum

Egmont Lammer

Ralf Walker

Franz Wels

In a heading or extraction machine () including extraction tools that are movable over the working face, and track walling devices such as anchor drilling and setting devices (), the machine () comprises a platform () that is displaceable in the longitudinal direction of the machine and carries at least two track walling devices each mounted to be separately displaceable relative to the platform ().

Heading or extraction machine

In a roadheading or mining machine including cutting tools movable over the mine face and roof bolt drilling and setting devices, at least two roof bolt drilling and setting devices are pivotally connected with the machine laterally outside the longitudinal central plane of the machine. The roof bolt drilling and setting devices are pivotally supported on a bolting platform capable of being displaced in the longitudinal direction of the machine, or on an element connected with the bolting platform.

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Fohnsdorf, Austria

Manfred Meier