Convoys of bulldozers, dump trucks and ambulances plowed through the Eastern Seaboard yesterday, restoring vitality to cities and towns silenced by the snow.

At least 67 persons died in the week-long barrage of snowstorms and bitter cold that swept from Texas to New England, shutting major airports in the East, blocking main roads and paralyzing some vital centres of commerce.

"The center of the storm is moving over Nova Scotia . . . luckily we're expecting no more big storms for the next couple of days," said meteorologist Gary Schmeling at Boston, where a record 21.4 inches of snow in 24 hours paralyzed the area.

While weary northeasterners were burrowing out, the second major storm of the week drifted east across Texas, dumping more than 6 inches of new storm on San Angelo in three hours. Heavy-snow warnings were issued for the Dallas-Fort Worth area, and traveler's advisories were in effect throughout southwest Texas.

Boston's Logan International Airport resumed partial service yesterday afternoon and both Kennedy and Laguardia airports in New York reopened with one runway. Newark Airport was to reopen later in the day.

About 300 Natinal Guardsmen manned a 50-vehicle convoy of ambulances and bulldozing equipment that rolled into New York City - where 13 1/2 inches of snow fell - to assist in cleanup and in medical aid to storm victims.

Snowbound New Yorkers faced an additional burden - it is illegal to push snow from sidewalks and driveways into the streets.

While the Boston area's mass transit authority paid volunteer shovelers $3 an hour to help dig stations out, cross-country skiers used the snow-covered trolley tracks for paths.

A state of emergency remained in effect in Pennsylvania, where the snow caved in the roof of a firehouse in Harrisburg.