FACTBOX - Key facts about North Korea's Yongbyon

(Reuters) - North Korea said on Tuesday it would suspend disabling its nuclear plant that produces arms-grade plutonium and will consider restoring its reactor because the United States has violated a disarmament deal.

The country demolished the cooling tower at the Soviet-era Yongbyon nuclear complex in late June, in a symbolic event supposed to highlight its commitment to a six-way disarmament-for-aid deal.

Following are some facts about the Yongbyon nuclear complex and what moves to restart it could mean:

LOCATION

- Yongbyon is about 100 km (60 miles) north of Pyongyang, built in a clearing in the rugged mountain ranges of the North Pyongan province.

THE FACILITIES

- The complex consists of a five-megawatt reactor, a fuel fabrication facility and a plutonium reprocessing plant, where weapons-grade material would be extracted from spent fuel rods.

- The site also contains a 50-megawatt reactor whose construction was suspended under a 1994 nuclear deal with the United States. The reactor is nowhere near completion.

ESCALATION OF TENSION