A bluecap is a mythical fairy or ghost in English folklore that inhabits mines and appears as a small blue flame.
[2] Bluecaps were regarded as hard workers and it was said that they were expected to be paid a working man's wages, equal to those of an average putter (a mine worker who pushes the wagons).
This payment was left in a solitary corner of the mine, and they would not accept any more or less than they were owed.
The miners would sometimes talk of having seen a flickering bluecap settle on a full tub of coal, transporting it as though "impelled by the sturdiest sinews".
[4] Citations Bibliography This article about a legendary creature is a stub.