Find the Gauss box

 is an optional side mission featured in S.T.A.L.K.E.R.: Lost Alpha (v1.4000+).

"Actually, there is, bring me a box from the Radar. But let's keep this a secret. The Gauss rifle you've brought can't be tested without ammunition. I know for sure that Monolith has a lot of it. So go to the Radar, pay a visit to Monolith. They won't give it to you without a good fight so keep it quiet. But if you love a good fight, you may loud but be sure to bring the box to me. So what, will you do me a favor another time?."

- Milo

"Find the box at one of the Monolith bases. It's probably at the radar under the antennas."

- Detailed task information

Overview
The mission is given by Milo, located in the Non-Stop Bar at the Mercenary Base from Construction Site.

A Find The Item side mission:
 * 1) Find the box.
 * 2) Get the box to Barman.

Trivia

 * Presumably, Milo provides the player with the Forgotten key, which is necessary to later Retrieve the machine for Lukash.