From staff reports
QUAPAW, Okla. —
3M expanded its presence in the Four-State Area when it completed its $860 million acquisition of Ceradyne Inc. last week.
The deal includes Ceradyne’s boron plant in Quapaw, which employs about 115 people. That plant produces enriched boron products for use in nuclear power plant operations for waste containment and radiation absorption.
3M also employs 636 people at its plant in Nevada and is the largest employer in that city, according to the Nevada Chamber of Commerce.