The workers are energy based and walk around with hard hats. They will use 20 energy each, so basically you will get 1 an hour. The suitcases drop from any building you collect coins from. Good luck..the suitcases were slow dropping for me.
M8 This task in very painfull , but thanks a lot , I made I incredible mistake, I decided to do this task and the bridge. The bridge I am on 4 task wait a lot of time for 03 compass from bookstore ...
Thanks a lot