Soda can tabs

We're looking for a collection of soda can tabs that disappeared recently.

The RC who lives in 1502 C wing was collecting soda can tabs in the C-wing common area, and the collection is gone. It was there a few days ago. The tabs were being collected for a whole year, and the collection needs to be turned in tomorrow for this RC's other job. If anyone knows what happened to it, please let the RCs know today.