โ Scribed by Mink, William H. ;Smith, R. K. ;Carlton, H. E. ;Longanbach, J. R.
No coin nor oath required. For personal study only.
Prior to 1972, polychlorinated biphenyls (PCBs) were widely used as a fire-retardant additive in hydraulic oils employed in foundry die-casting machines. When the sale of hydraulic fluids containing PCBs for non-closed-loop applications was stopped in 1972, existing PCB-laden hydraulic oil stocks were recycled with losses replaced with PCB-free hydraulic oils containing an alternate phos hate to recycle oils containing more than 50 ppm PCBs contaniinated oils were removed from foundry operations and
๐ SIMILAR VOLUMES
## ORDER OF NERIT. His Mnjcsty tho King hns bccn plcnscd to confer the distinction of tlic Ordcr of Merit upon Sir Wm. Crookcs, F.B.S., n member of tlicnfirst Council of tho Socicty. Liverpool Section. ## Neetirig held rct The University, uit Ii'ednccrday, April 13111, 1910. DR. JAMES T. COXRO