Grenades are one of the few explosive objects in Total Miner. They can only be used with a Grenade Launcher. You can construct a grenade without a workbench using 2 steel bars and 2 sulphur blocks to craft 2 grenades. They can also be purchased from the item shop for 2000 gold pieces each.
Note: Grenades cannot be thrown, and can only used for ammunition for the Grenade Launcher.