Relative price stability in the recycled glass market could prompt a re-evaluation of local authority commingled collections. While other materials have experienced instability or dramatic price drops, glass has changed very little. The materials prices and tonnage security could be an attractive factor for cash strapped councils currently examining the impact of rising collection costs on their budgets. OI recycling development manager Martin Langshaw said: "Prices paid by the glass packaging industry for colour separated cullet remain very stable, as reflected each week in the pages of MRW. They have fluctuated by no more than a pound or two for the past two years and provide a market of value for recyclers." According to Langshaw this "offers councils and contractors the security of a long term contract with guaranteed tonnages and prices."