Instructions
Log in to your Facebook account and start the game. Click the "Travel" button on the top left of the game screen and click "Las Vegas" from the drop-down menu.
Click the "Jobs" tab on the top left of the game screen to bring up a list of available missions. Click one of the eight districts at the top of the game screen to see missions in that area. If you have not done any previous missions in Las Vegas, only District One will be available.
Click the yellow "Do Job" button next to the job descriptions for a chance to receive loot. You need Energy (shown at the top of the screen next to the lightening bolt icon) and Items (shown underneath the job description) to do the job.
Continue clicking the "Do Job" button until you receive the "Cinder Block" as a loot reward. You receive experience and random loot each time you perform a job. The cinder block is one of the random pieces of loot found only in the Las Vegas area.