Map for Twin Oaks Consulting Map for Twin Oaks Consulting Search | Advanced Search | New Members | Coupons and Discounts | All Categories Business & Professional Services >> Engineer/Architect >> Engineer, consulting Twin Oaks Consulting 820 Evans StreetHazleton, PA 18201 | directions Mr John R Ackerman PE, PG 570-956-0249 | fax: 570-455-9858 Visit Site If your business isn't here, contact us today to get listed!