11.   Post offices were using X-ray to screen all international mail and parcels that have no return addresses.

12.   Post offices were using X-rays to screen all international mail and parcels that have no return addresses.

13.   A new international mail service is being tested in a half-dozen American cities by the U.S. Postal Service.

14.   A Post Office spokesman said the move was at the instruction of the Universal Postal Union, which regulates international mail.

15.   In Hong Kong, however, postal workers expressed concern over the safety of handling international mail and the Post Office there said it would draw up safety guidelines.

16.   It will be accompanied by changes in many other rates, including international mail.

17.   Other rates will also rise including international mail, Express Mail, Priority Mail, parcel post, periodicals and advertising mail.

18.   South Korean postal workers handling international mail began using gas masks and gloves this week as a precaution against possible biochemical terrorism, officials said Tuesday.

19.   The Indian government has also decided to provide mail sorters at international mail stations in the major cities with masks, gloves and X-ray machines.

20.   The mistake was one of the biggest of its kind to befall international mail entering Japan, Kyodo said.