Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Domain | Definition |
Mining | To combine the forcing and exhausting systems, it is not necessary to provide two ducts, one forcing and one exhausting, throughout the length of the heading. An arrangement that serves the same purpose is the overlap system. In this system a main exhausting duct is used within a convenient distance of the face, often about 100 ft (30.5 m). Some of the intake air in the heading, before reaching the end of this duct, enters a short length of tubing and is blown onto the face. The advantages of both systems are thus obtained. Precautions must be taken against recirculation of air by the forcing unit, to prevent concentration of dust, and in collieries, combustible gases, at the face. The two ducts must overlap by a minimum distance which, in practice, is usually taken as 30 ft (9.1 m). See also:auxiliary ventilation. (references) |
Source: compiled by the editor from various references; see credits. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)4F 56 45 52 4C 41 50 41 55 58 49 4C 49 41 52 59 56 45 4E 54 49 4C 41 54 49 4F 4E |
| Leonardo da Vinci (1452-1519; backwards) (references)
|
Binary Code (1918-1938, probably earlier) (references)01001111 01010110 01000101 01010010 01001100 01000001 01010000 00100000 01000001 01010101 01011000 01001001 01001100 01001001 01000001 01010010 01011001 00100000 01010110 01000101 01001110 01010100 01001001 01001100 01000001 01010100 01001001 01001111 01001110 |
HTML Code (1990) (references)O V E R L A P   A U X I L I A R Y   V E N T I L A T I O N |
ISO 10646 (1991-1993) (references)004F 0056 0045 0052 004C 0041 0050 0041 0055 0058 0049 004C 0049 0041 0052 0059 0056 0045 004E 0054 0049 004C 0041 0054 0049 004F 004E |
Encryption (beginner's substitution cypher): (references)49563952463550235555843464335525925639485443463554434948 |
| 1. Orthography 2. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
