NARROW BOARD. — (See Board.)

NARROW-WORK. — Excavations 3 yards in width and under, for which, above the hewing price an extra price per yard is paid.

NATTLE. — (See Fissle.) By nattle is implied a slightly increased action of the creep.

NICK. — To cut the coal vertically, next to the side of the place, similarly to the kirving, preparatory to taking down the jud.

NICKINGS. — The small coals made in nicking.

NIGHT-SHIFT. — (See Day-shift.)

NIP. — The effect produced upon the coal pillars by creep a crush or squeeze. Also an approach of the roof and thill of a seam of coal towards each other, usually of the former towards the latter, the seam having for a greater or less breadth being occasioned almost or even entirely to disappear. Occasioned by denudation.

NOOK ("NEUK"). — A corner of a working place at the face ; also, the corner of a pillar of coal.

NUTS. — Re-screened small coal. (See Apparatus.)