993 resultados para 338.54


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Gallo Pietro (Turnverein Venedig), Brief zum Deutschen Turnerfest in Frankfurt

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Trägerbände: Inc. qu. 1198; Inc. qu. 1240; Vorbesitzer: Dominikanerkloster Frankfurt am Main

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Vorbesitzer: Abraham Merzbacher;

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Vorbesitzer: Druda Haemerckers (?)

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Signatur des Originals: S 36/F12189

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Vorbesitzer: Jakob Butsch; Bertold Diller; Johannes Adam Mohr

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Trägerband: Ms. Barth. 129; Vorbesitzer: Bartholomaeusstift Frankfurt am Main

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Two types of deep-sea dredges are currently under development for the mining of the manganese nodules, a deep-sea hydraulic dredge and a mechanical cable-bucket system. Both systems offer some advantages with the hydraulic system appearing to be advantageous in themining of a specific deposit for which it is designed while the cable-bucket system appears to be somewhat more flexible in working in a variety of deposits, topographic environments, and water depths. Environmental studies conducted in conjunction with deep-sea tests of the two types of mining systems currently indicate that substantially no environmental damage will be done in the mining of the deep-sea nodules. Because of the nature of the deposits and the way in which they can be mined, the manganese nodules appear to be a relatively pollution free and energy-saving source of a number of industrially important metals.

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