Dear Valued Relation,

we would like to inform you that Van Mannekus has closed the plant location in Holland and that from June 30th 2018 onwards, customers will be delivered by Timab Magnesium or Grecian Magnesite.

Please contact :

Timab Magnesia

Grecian Magnesite

Brief History

Founded as early as 1904, Van Mannekus started as a family company in the centre of Rotterdam. In 1990 the company was acquired by Possehl Erzkontor from Germany and moved its headquarters and production plant to its present location in the port of Schiedam. By 2007 half of the company’s shares moved hands to Europe’s largest magnesia producer Grecian Magnesite with the remaining 50% being acquired by the French Roullier Group in January 2012.


Van Mannekus is committed in providing service based on three key aspects:

  • Products; for each application, with our own production and secure trading focussing on traceability, quality and consistency
  • Logistics; excellent logistical solutions with worldwide span from the unique location in the Rotterdam port area
  • Service Support; stringent quality control by onsite laboratory, Research & Development support from Grecian Magnesite’s R&D centre, financial and logistical services from the Roullier Group


Key Figures

  • Established in 1904
  •  Own berth and unloading facilities for vessels up to 200 meters
  • Onsite laboratory for chemical and physical analyses i.e Specific Surface area measurements (SSA)
 and measurement of Particle Size Distribution (PSD)
  •  Fully automatic packing lines with the possibility of customer specific labelling. and PLM crane (2009) with unloading potential of vessels up to 200 meters
  • Total surface area of 25 000 m2 of which 60% is under roof
  • Storage capacity ~15 000 mt (raw materials & final products)
  • 3 mills with a total production capacity of 50 000 tpa
  • Capacity of 10 000 tpa emery products (various grain sizes)