You must be looking to restore lost files from trash bin when you have mistakenly deleted some files from the Mac drive. The Mac OS X has a great utility in the form of trash bin which prevents accidental deletion from the Mac system. The deleted file goes to the trash from where it can be restored or deleted permanently. If you have also removed the file from the trash then it will be difficult to restore lost files from trash files. You can look for any backup of your own or you can make use of the time machine that automatically saves a copy of file in external drive. If the time machine fails then the last option would be Mac data recovery software to restore lost files from trash bin. You need to use the software as soon as possible because if the date is overwritten by new file then the recovery will be impossible. You have to scan the Mac drive for the deleted file and they will be shown in the preview. Just select and restore lost files from trash bin, the recoved file can then be accessed easily. So download the software now.