Thank you! PSDs are only included in the Source version of the pack. However, if you want to, you should be able to directly open the spritesheet png file with collectibles in probably any editing software.
Oh, my bad! Then look for: IndustrialAssets1_Collectables_1_v1.0.psd , it should be in both SOURCE/Photoshop PSDs 16p and SOURCE/Photoshop PSDs 32p folders. And thank you for your support!