Wood preservation a long-practised method and often used in today's carpentry workshops. Technological developments mean it is also possible to spray preservative over the surface of the timber. Some of the liquid is drawn into the wood as the result of capillary action before the spray runs off or evaporates, but unless puddling occurs penetration is limited and may not be suitable for long-term weathering. By using the spray method, coal-tar creosote, oil-borne solutions and water-borne salts (to some extent) can also be applied. A thorough brush or spray treatment with coal-tar creosote can add 1 to 3 years to the lifespan
Coal in Finland Coal in Finland Coal in Finland is used as an energy source in Finland. However, since Finland has no domestic coal production, it must import all of it from other countries, primarily from Russia. Finland is a peat-producing nation. Peat is classified as coal by the IEA. There is no coal mining or coal tar in Finland. Coal is imported. According to Finnwatch (27.9.2010) there are 13 coal power plants in Finland. The companies Pohjolan Voima, Fortum, Helsingin Energia and Rautaruukki consume coal most. According to the Finnwatch inquiry in 2010 none of the Finnish companies had yet a commitment