...carelessness of workmen. 15. Collieries. — Undoubted evidence exists of the explosion of firedamps in collieries, through sparks from atmospheric electricity...headgear of all shafts should be protected by proper lightning-conductors. • It IB recommended that the Inlet and outlet plpei ot large gas-meters be...

...works from accidental causes, and often from the carelessness of workmen. (See p. 14.) Collieries. — Undoubted evidence exists of the explosion of firedamp...should be protected by proper lightning conductors. ( Signed) W. GEYLLS ADAMS. WE AYETON. LATIMEE CLARK. EE DYMOND. G. CAREY FOSTER. DE HUGHES. T. HAYTER...

...numerous, tests can be effected by the provision of test clamps of a suitable design. 29. COLLIERIES. — Undoubted evidence exists of the explosion of firedamp...shaft and the iron rails of the galleries. Hence the head gear of all shafts should be protected by proper lightning conductors. SUGGESTIONS OF THE COMMITTEE....

...of the works from accidental causes, and often from the carelessness of workmen. 15. COLLIERIES. — Undoubted evidence exists of the explosion of firedamp...headgear of all shafts should be protected by proper lightning-conductors. (Signed) W. GRYLLS ADAMS. WE AYRTON. LATIMER CLARK. EE DYMOND. C. CAREY FOSTER....

...taken to insure perfect steadiness of movement, as jerking is ruinous to Ropes. " Changing Ropes. — A Rope may be changed from a smaller to a larger drum,...suggested in the Report of the Lightning Rod Conference, 1 88 1 . " Safety. — Nothing costs too much on which life depends." COMPARATIVE TABLE OF THE DIFFERENT...

...of the rules does not carry conviction. Thus, in the rule about ' collieries,' it is stated that ' undoubted evidence exists of the explosion of firedamp...electricity being led into the mine by the wire ropes of the shafts and the iron rails of the galleries. Hence, the head gear of all shafts should be protected...

...period of the works from accidental causes, and often from the carelessness of workmen. Collieries. — Undoubted evidence exists of the explosion of fire-damp...through sparks from atmospheric electricity being led to the mine by the wire rapes of the shaft and the iron rails of the galleries. Hence the head-gear...

...workmen. Collieries. — Undoubted evidence exists of the explosion of firedamp in collieries through the sparks from atmospheric electricity being led into...should be protected by proper lightning conductors. The relative conductivity of the cheaper metals is given as follows : — Lead, 1 ; tin, 1 J ; iron,...

...heavy cotton braiding, which prevented the current from passing. Lightning Conductors. Collieries. — Undoubted evidence exists of the explosion of firedamp...sparks from atmospheric electricity being led into the mines by the wire ropes of the shaft and iron rails of the galleries, hence the head gear of all shafts...

...numerous, tests can be effected by the provision of test clamps of a suitable design. (14.)— COLLIERIES. Undoubted evidence exists of the explosion of fire-damp...should be protected by proper lightning conductors. AB The two methods of running a conductor are illustrated by Fig. 6. A is that recommended in Rule...