Cosmonauts retrieve explosive bolt during spacewalk

By Irene Klotz

CAPE CANAVERAL, Florida (Reuters) - Two spacewalking cosmonauts delicately removed an explosive bolt from their Soyuz capsule on Thursday in hopes engineers can figure out why two previous crews landed hard and off course.

The bolt, which has the explosive capability of an M-80 firework, is one of 10 that separate the Soyuz's crew module from an equipment compartment before entry into Earth's atmosphere.

Russian engineers suspect a bad bolt delayed the compartment's jettison during landings in October 2007 and April 2008, leading to steep and fast descents and hard slams into the ground.

The bolt removed by cosmonauts Sergei Volkov and Oleg Kononenko was sealed inside a blast-proof canister and will be returned home aboard the Soyuz when the crew completes its mission in October.

Despite assurances the bolt could not detonate in the cosmonauts' hands, flight controllers repeatedly cautioned the men to move slowly and carefully.

"Take your time," Mission Control, speaking through a translator, told the spacewalkers.

It took four hours for Volkov and Kononenko to position themselves at the Soyuz, cut through insulation and open a locking mechanism to free one of the bolts.

Finally, at 6:44 p.m. EDT, Volkov handed the device to Kononenko, who was standing by with a stainless-steel, blast-proof canister.