you are: Grandiose event

For a dam erected under the project of engineer Leli, name Afslyojtdjaik was fixed. In the book of records Ginnessa it appears as the greatest on extent a sea dam from all existing in the world.

Afslyojtdjaik Northern Holland has connected to continental part Frislandii a continental part of a province. The width of a dam reaches 90 metres, and height of a surface part-7,5 of metre. In the Book of records Ginnessa also one of polderov, created by Dutches on place Zejderze, by the way, is brought. This polder - Markervaard - is considered for today the largest in the world is artificial the created site of a land. Its area exceeds 600 square kilometres.

The Word "polder" has entered nowadays into all languages of the world, but it from Holland comes. polderom name drained (and in the Netherlands - more often won from the sea) and the cultivated fertile site of the earth cut by channels and protected by dams. As polder - artificial formation, its surface, as a rule, ideally equal.

Creation poldera-has put labour-consuming, and some years of laborious, almost continuous work that there is no time to transform the unsuitable earths into the fertile are required. At first a sea or gulf part fence off an embankment and pump out water. After that on the big depth remove a ground. The old earth to leave it is impossible, as it is impregnated by sea water and salt, having risen on a surface together with subsoil waters, can transform again a site in unsuitable for the further use. Instead of the taken ground bring and fill the new earth. The taken out ground subject to special processing, enrich its necessary elements and again use. But also it yet all. In the first year poldery sow with a grass which mow down and leave on a place. Thus strengthen soil within several years, and only after that poldery transfer in using to farmers.