Copyright © Philip M. Parker, INSEAD. Terms of Use.

BORD-AND-PILLAR METHOD

Specialty Definition: BORD-AND-PILLAR METHOD

DomainDefinition

Mining

A system of mining in which the distinguishing feature is the winning of less than 50% coal on the first working. It is more an extension of the development work than mining. The second working is similar in principle to top slicing. The remainder of the coal is won by a retreating system, the cover being caved after each unit has been worked. The term bord-and-pillar is not used to any great extent in American mining literature, but has a place in English literature. Various names have been applied to this method, such as checkerboard system, Brown panel system, following up the whole with the broken, Lancashire bord-and-pillar system, modified room-and-pillar working, narrow working, North Staffordshire method, rearer method of working inclined seams, rock-chute mining, room system, room system with caving, Warwickshire method of working contiguousseams, wide or square work, and pillar-and-breast. (references)

Source: compiled by the editor from various references; see credits.

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Alternative Orthography: BORD-AND-PILLAR METHOD


Hexadecimal (or equivalents, 770AD-1900s) (references)

42 4F 52 44 2D 41 4E 44 2D 50 49 4C 4C 41 52      4D 45 54 48 4F 44

Leonardo da Vinci (1452-1519; backwards) (references)

    

Binary Code (1918-1938, probably earlier) (references)

01000010 01001111 01010010 01000100 00101101 01000001 01001110 01000100 00101101 01010000 01001001 01001100 01001100 01000001 01010010 00100000 01001101 01000101 01010100 01001000 01001111 01000100

HTML Code (1990) (references)

&#66 &#79 &#82 &#68 &#45 &#65 &#78 &#68 &#45 &#80 &#73 &#76 &#76 &#65 &#82 &#32 &#77 &#69 &#84 &#72 &#79 &#68

ISO 10646 (1991-1993) (references)

0042 004F 0052 0044 002D 0041 004E 0044 002D 0050 0049 004C 004C 0041 0052      004D 0045 0054 0048 004F 0044

Encryption (beginner's substitution cypher): (references)

3649523815354838155043464635522473954424938

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INDEX

1. Orthography
2. Bibliography


  

Copyright © Philip M. Parker, INSEAD. Terms of Use.