Norman LiebermanElizabeth T. Lieberman is a chemical engineer with more than three decades of experience in the process industries. She works as a consultant troubleshooting mainly oil refinery and chemical plant process problems, carrying out field survey an plant optimization studies with Norman Lieberman in preparation for revamp designs. Elizabeth also has experience in ceramic clay processing, refractories processing, and the conveyance of slurry flow.

Norman P. Lieberman is a chemical engineer with 58 years of experience in process plant operation, design, and field troubleshooting. An independent consultant, he troubleshoots oil refinery and chemical plant process problems and prepares revamp designs. Norman teaches 20 seminars a year on "Troubleshooting Process Plant Operations" and related subjects. He has written 11 books on plant process operations and problems, and has received the "Lifetime Achievement" award from Hydrocarbon Processing.

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