Modifiers

Place a chest on any of the redstone corners.

Then you can place either emerald blocks, diamond blocks, or a nether star in that chest above the redstone block.

Summary of modifiers:

• Emerald Blocks - Reduce mining delay by 1 tick for every 4 emerald blocks. Max is 76 emerald blocks.

• Diamond Blocks - Increases the number of blocks mined at a time by 1 for every diamond block. Max is 36 diamond blocks.

• Gold Blocks - Increases the efficiency of the quarry. Max is about 99% efficiency at 100 gold blocks.

• Nether Star - Place a single nether star in a chest above the redstone to enable dirt block replacements for mined blocks in the ender mining mode.