NU Online News Service, April 21, 2005, 3:12 p.m. EDT

Safety-Kleen Systems Inc., Plano, Texas, has hired the retirement unit at Prudential Financial Inc., Newark, N.J., to manage its defined contribution retirement plan.[@@]

Safety-Kleen cleans parts, manages industrial waste, and recycles and re-refines oil.

The Safety-Kleen retirement plan has more than 4,200 participants and about $140 million in assets, Prudential says.