… open cells. Ecaussine is extracted from various quarries in Belgium and particularly at Ecaussines. It is a bluish‑grey … similar to granite and is therefore sometimes known as “Belgian granite”, “Flanders granite” or “ petit granit ”. …
… mandrel (Neuval or Dalmine process) or ‑ in a pilger mill or ‑ in a Stiefel mill or ‑ in a … on a bench or cold‑rolling (cold‑reducing) in a pilger mill (Mannesmann or Megaval process). These …
… or zirconium metallurgy. The heading excludes sodium amalgam ( heading 28.53 ). (3) Potassium . A silvery‑white … containers (“flasks”). Mercury is used for preparing the amalgams of heading 28.43 or 28.53. It is used in gold or …
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