The trash can is used to restore items which have been deleted from your teamwork account within the last 30 days. There are two distinctly different trash cans; one for restoring data within a project and another for restoring projects. Both trash cans are only accessible to administrators in the owner company.
Restoring tasks, milestones, files etc..
To restore either milestones, tasks, task lists, notebooks or files within a project: Go to the project settings page and under project options, click "Trash can". This will bring up a lightbox containing a list of all data deleted from the project listed by date deleted. On the top right of this lightbox there is a dropdown menu for filtering by type. To restore an item simply click the restore button beside its name.
Restoring a project
To restore a project- go to the projects page. This link is accessible through the menu in the top left of every page. At the bottom right of the projects page there is a "Trash can" button. Click it and it will list all deleted projects. Again, hit restore and your project will appear