Quarryig Terminology

QUARRYING-TERMINOLOGY
Important terms used in quarrying are as follows:
(i) Blasting: It is quarrying stones (of compact nature) with explosives.
(ii) Safety fuse: It is device consisting of a length of slow and even burning composition, which provides adequate time to the person firing a short or blast to reach a safe place prioir to occurance of the explosion.
iii) Detonator:lit is a device whose explosion initiates that of another. The detonators art fired either by fuse or electric spark. It is used as explosive.
(iv) Explosive:An explosive is a mechanical mixture or chemical compound of combustible and oxidising agents which release the energy when fired, almost instantancously. The blasting
powder and dynamite are commonly used as the explosives.
(v) Tamping: It is an operation of filling the hole containing explosive charge with stiff sandy clay (or other non-inflammable material) with the purpose of enhancing the explosion force.
(vi) Quarry sap: It is the moisture (natural) found in the freshly quarried stone.
(vii) Line of least resistance (L.L.R): All the rocks contain lines of bedding fissures along which these can be split easily. These lines are known as "Lines of Least Resistance". The L.L.R plays important part in determining the quantity of explosive and it should be carefully
decided.

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