We're learning some great things about building a tire wall as we finish up our first course of tires! We'll tell you all about using a concrete mixer and a pneumatic backfill tamper as ways to make the process of building our tire wall more effective and efficient! Intro 0:00 Dirt Dilemmas 0:52 Concrete Mixer 2:00 Dirt Moisture Levels 2:40 East Wing Update 3:09 Pneumatic Backfill Tamper 3:34 Community 5:00