HAL is the national open repository for documents and data from French scientists. The deposits are organized in institutional portals and collections from research units and projects. The paper will analyse how grey literature is represented in the collections of French research laboratories on HAL. Our study concerns the grey literature deposits in HAL from the 60 research laboratories affiliated to the University of Lille, covering all STM and SSH fields. The focus will be on conference papers, reports, working papers, theses and dissertations. The study will distinguish between deposits of documents and records without documents, will compare deposits from different disciplines, different laboratory collections and different document types, including articles and book chapters. If possible, we will also have a look on usage statistics, as an indicator of impact (altmetrics, cf. Schöpfel & Prost, 2016).