The article Modelling particle-size distributions from operator estimates of sediment particles (Roberson & Weltje, 2014) has been withdrawn due to a misunderstanding about the permission required for the underlying data on which the reported results relied. The editors expect the article to be rewritten and republished in collaboration with the owners of the data, the Geological Survey of the Netherlands, as soon as practicably possible, and apologise for any inconvenience caused.