Charges against six of the 11 people arrested in connection with the seizure of nearly a half ton of hashish earlier this month were dropped this week, the U.S. Attorney's Office in Alexandria said yesterday.

According to special Assistant U.S. Attorney David Harris, charges of conspiracy to distribute hashish and conspiracy to possess hashish with intent to distribute it were dropped against George V. Carman, 33, a professional gambler from Boston; Allen Heasley, 41, and William DiMauro, 25, two airplane pilots from Florida; Lynn E. Flethcer, 37, of Ft. Lauderdale: Jeff E. Wheeler, 21, a restaurant worker from Bradenton, Fla., and Kenneth L. Bates, 26, a student from Naples, Fla.

Harris would not say why the charges were dropped, but he said that they could be reinstated at any time against any or all of the six men.

Federal drug enforcement agents had called the seizure "one of the largest of its kind in the immediate (Washington) area." According to agents with the Drug Enforcement Agency (DEA), the hashish arrived Dec. 4 at Dulles International Airport aboard a Pan American Airlines commercial jet flight originating in New Delhi.

The hashish was hidden within a 67-crate shipment of brass door knockers, according to DEA agents.

Five others are still charged in the case, Harris said.