E-Tank E-Tank Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Other >> Mining Machinery E-Tank 3150 Millennium Boulevard SEMassillon, OH 44646 | map | directions (888) 703-8265 Visit Site Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.