05/15/13 RHI confirms full-year guidance with Q1 results (ad hoc)

05/13/13 RHI publishes second Sustainability Report

05/03/13 RHI adapts European plant structure to long-term demand situation (ad hoc)

05/01/13 Chapter 11 proceedings of the US companies deconsolidated in 2001 completed (ad hoc)

04/29/13 RHI acquires an additional 26% in Orient Refractories Ltd., India, through a public offer