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New threaded roof bolts

Belyaev, V.S. / Sever'Yanov, A.N. / Genin, M.S.

Use of rock drill drive to insert threaded bolts, 25-27 mm in diam and 0.9-1.6 m long; diameter of bolt is 1-3 mm larger than diameter of drill hole into which it is screwed.

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New threaded roof bolts

Belyaev, V.S. / Sever'Yanov, A.N. / Genin, M.S.

Use of rock drill drive to insert threaded bolts, 25-27 mm in diam and 0.9-1.6 m long; diameter of bolt is 1-3 mm larger than diameter of drill hole into which it is screwed.

New threaded roof bolts

Belyaev, V.S. / Sever'Yanov, A.N. / Genin, M.S.

Use of rock drill drive to insert threaded bolts, 25-27 mm in diam and 0.9-1.6 m long; diameter of bolt is 1-3 mm larger than diameter of drill hole into which it is screwed.

Access

Check availability in my library

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Document information

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Document information

Title:

New threaded roof bolts

Additional title:

Novaya shtangovintovaya krep

Contributors:

Belyaev, V.S. (author) / Sever'Yanov, A.N. (author) / Genin, M.S. (author)

Published in:

Publication date:

1963

Size:

3 pages

Type of media:

Article (Journal)

Type of material:

Print

Language:

Russian

Keywords:

Coal mines and mining

© Metadata Copyright Elsevier B. V. All rights reserved.

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