Stone Dropper

Overview
The Stone Dropper is a dropper that possibly costs $25, and its drops are worth $1. It drops at a normal speed, and is unlocked from purchasing Dirt Dropper. Unlike the Dirt Dropper, the Stone Dropper is automatic, meaning you can AFK farm. The Stone Dropper does not have any upgrades, except for the Ultimate Uranium Upgrade. The Stone Dropper is on Floor One. The Stone dropper unlocks the Copper Dropper.

Trivia

 * When the Ore Tube is purchased, the Stone Dropper appears inside the Tube.
 * This dropper is the only dropper only has the Ultimate Uranium Upgrade and no other upgrades. The Minecraft Droppers do not have any upgrades, though.