List of words “used” in the Cornish tin mines


E Words

Easers In a development round of holes the easers are the shot holes immediately surrounding the cut holes. Generally eight in number thet were fired as four pairs of opposites, creating first a diamond, then a square with sides approximately two to three foot long, to the depth of the cut.
Eimco™ The trade mark name of a manufacturer of mining equipment
Eimco 12b – A compressed air driven, rail mounted air shovel, to which the trademark name ‘Rocker shovel’ is applied. The 12b was the primary mechanical means of mucking ends and loading from piles from the 50’s through to the early 70’s when other machines began to be introduced.
Eimco 21 – As above, a larger version of the 12b
Eimco Clamp – A U-shaped piece of steel that, with a steel wedge, clamped a slider rail firmly into the web of an upright rail when mucking beyond the track end in development headings.
Eimco (Shovel) – The name generally given when referring to a ‘Rockershovel’ as were the terms 12b and 21.
Eimco Winch – Single drum winches of various sizes used for many hoisting and pulling operations underground, also used for tipping wagons at dump points. The Eimco motors have multiple cylinders driven by compressed air.
Elvan A hard, fine grained rock, colloquially, and used as high quality roadstone
Blue Elvan- known as elvan
Elvan Dyke - A dyke containing blue elvan
End General term for the last hundred feet or so of a main development (a drive or crosscut) heading whilst being mined.
End Plate – The timber at either end of a set in a rectangular timber shaft.
Engine Generally applied to the winding or pumping engines on the surface of a mine.
Engine Shaft – Term for a shaft in which a beam engine was used to pump water.
Eucalyptus Oil Unique and strong smelling essential oil that is introduced into the compressed air line at surface, and poured into the downcast shafts, as an emergency warning, generally taking less than twenty minutes to permeate any ventilated places in the mine.
Exploder Common term for any shotfiring device that is used to set off electrical detonators, also known as a ‘battery’.
“Beethoven” – Trade mark name for a dynamo condenser exploder using a removable winding key to generate and store a high voltage charge.
Exploder Box – Wooden box in which a ‘Beethoven’ exploder is kept underground when not in use.
Exploder Key – The removable winding handle that operates an exploder. It is an offence to leave a key with an exploder when not in actual use to fire. It has to be kept on the shotfirer’s person at all other times
“Schaffler” – As for ‘Beethoven’ above, but utilising a clockwork mechanism and key.
Explosive Any material that rapidly decomposes into a gas many times its original volume when subjected to heat, shock or other means.
Explosives Magazine – A licensed and secure place on surface of a mine where explosives may be stored.
Explosives Reserve Station – A secure place underground where explosives are stored for distribution and usage. Each level may have two or more.
Explosives Store – As per Reserve Station above
Eyepeg A heavy duty steel pin with one end made into an almost closed hook, leaving enough space for a stope chain ring to enter it, and the other end split for insertion of a steel wedge, if required. (a piece of 1” metal rod with a 3” diameter ring on one end.)

Peter Hughes has supplied words of this colour
D.C.Williams at Exeter University, better known as Gus. has supplied words of this colour
The remainder are supplied by Michael Davis