Bombs Blast Buildings on West Coast

Law- enforcement officials from across the country charged yesterday that a national conspiracy on the part of thousands of young revolutionaries threatens "an assault on the very foundation of our society."

They charged that revolutionaries on campuses and in inner cities are learning to make and use weapons in a loosely knit "kill the pigs" conspiracy.

The change came yesterday afternoon after three separate explosions went off in government buildings on the West Coast. The explosions occurred early yesterday morning at a ROTC building in Seattle, Washington, a National Guard Armory in Santa Barbara, California, and a county courthouse in San Rafael, California. There were no injuries.

Weathermen Suspected

Santa Barbara police chief A. W. Trembly told reporters, "We certainly believe the bombings are connected with the Weathermen and other terrorist groups in our nation today."

Trembly's statement backed up the testimony of policemen at a Senate hearing yesterday. "The groups we are dealing with today are not innocent, misinformed students," Sheriff Michael A, Amico of Erie County, New York, told the panel. "They know precisely what they are doing. Their ultimate goal is not reform, but revolution. They preach peace but practice violence on an ever-increasing level."

Police based their belief that the explosions are linked to the Weathermen on a tape recording allegedly made by Bernadine Dohrn, a Weatherman leader.

The tape, which was received and played at the New York headquarters of the Yippies two days ago, said the Weathermen plan a fall offensive which will spread from "Santa Barbara to Boston and back to Kent State and Kansas. Now we are everywhere and next week families and tribes will at-

tack the enemy around the country," the tape said.

25 Minutes

Yesterday's explosion in Seattle caused $150,000 worth of damage to the Navy and Air Force ROTC building at the University of Washington. A janitor was taken out of the building just after the Seattle Fire Department, a local newspaper and the university received telephone calls warning of the bomb. The calls came about 25 minutes before the blast, estimated to have had the force of about 20 sticks of dynamite, went off.

The San Rafael explosion, which severely damaged two courtrooms, was also preceded by a warning telephone call to a San Francisco telephone operator.