By March, 1981, the new plant was complete, boasting the largest single preheater kiln in the U.S. and an annual capacity of 1.6 million tons. In September 1981, the last bag of wet-process cement was sacked, and the six old kilns shut down forever. The two 220-foot concrete stacks, landmarks for more than 40 years, were felled one year later.
In all, $112 million had been invested to literally rebuild Permanente. Fuel consumption per ton of cement manufactured had been cut 35%, and emissions had been reduced significantly.