A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

N

Nanotesla       The international unit for measuring magnetic flux density.

Native gold       Metallic gold in its free or uncombined state. Placer gold.

Native metal       A metal occurring in nature in pure form, uncombined with other elements.

Natural ventilation       Ventilation of a mine without the aid of fans or furnaces.

Net profit interest       Profit remaining after all charges, including taxes and bookkeeping charges (such as depreciation) have been deducted.

Net smelter return       An interest in a mining property held by the vendor on the net revenues generated from the sale of metal produced by the mine.

Net worth       The difference between total assets and total liabilities.

Nip       Device at the end of the trailing cable of a mining machine used for connecting the trailing cable to the trolley wire and ground.

Nodule       A rounded lump or mass of mineral.

Nonel       A detonator which does not require an electric current to initiate its explosive charge.

Non-electric Cap       A detonator which does not require an electric current to initiate its explosive charge.

Non-metallic       Containing little or no metal; industrial mineral.

Norite       A coarse-grained igneous rock that is host to copper/nickel deposits in the Sudbury area of Ontario.

Nugget       Larger than normal piece of alluvial gold.