White coal

White coal

White coal is a form of fuel produced by drying chopped wood over a fire. It differs from charcoal which is carbonised wood. White coal was used in England to smelt lead ore from the mid-sixteenth to the late seventeenth centuries. It produces more heat than green wood but less than charcoal and thus prevents the lead evaporating. White coal could be use mixed with charcoal for other industrial uses than lead smelting.]

White coal was produced in distinctive circular pits with a channel, known as Q-pits. They are frequently found in the woods of South Yorkshire.

The term is also used to refer to Hydroelectricity. [The Book of Knowledge, Vol. 9 p. 3220 (1945 ed.) ]

White coal is also made from Ground nut husk.

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • white coal — n. water as a source of power …   English World dictionary

  • white coal — noun 1. a. : waterpower b. : electricity 2. : tasmanite * * * Informal. water, as of a stream, used for power. [1880 85] * * * whit …   Useful english dictionary

  • white coal — Informal. water, as of a stream, used for power. [1880 85] * * * …   Universalium

  • white coal — noun water that is being used to generate power …   Wiktionary

  • McGoldrick v. Berwind-White Coal Mining Co. — McGoldrick v. Berwind White Coal Mining Co. Supreme Court of the United States Full case name McGoldrick v. Berwind White …   Wikipedia

  • White — adj., n., & v. adj. 1 resembling a surface reflecting sunlight without absorbing any of the visible rays; of the colour of milk or fresh snow. 2 approaching such a colour; pale esp. in the face (turned as white as a sheet). 3 less dark than other …   Useful english dictionary

  • white — adj., n., & v. adj. 1 resembling a surface reflecting sunlight without absorbing any of the visible rays; of the colour of milk or fresh snow. 2 approaching such a colour; pale esp. in the face (turned as white as a sheet). 3 less dark than other …   Useful english dictionary

  • Coal Black and de Sebben Dwarfs — Merrie Melodies series Coal Black title card. Directed by …   Wikipedia

  • Coal Black and de Sebben Dwarfs — Título Coal Black and de Sebben Dwarfs Ficha técnica Dirección Robert Clampett Producción Leon Schlesinger …   Wikipedia Español

  • Coal Tit — Adult British Coal Tit, P. a. britannicus (note greenish grey back) Conservation status …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”