I have a series of reports on helmet noise produced in the Netherlands from 1989--1991, with English translations, but I cannot tell which organization produced them. The only information I can extract is that the organization might be the `RBB' and the covers of the reports refer to: `Department of Research and Development' (`Afdeling onderzoek en ontwikkeling'); to `Arbo Adviesbureau O&O' and on the English translation of a different report to `Public Health Department (Industrial)'. Any idea what the organization is (I assume it's something like the Dutch equivalent of the HSE)?