BULL RUN DIGGER SHIELD
Custom 114″ diameter digger shield to excavate twin, parallel 1,240-foot-long tunnel alignments as part of the Portland, Oregon’s Bull Run Filtration Project. Designed to operate in both soft soils and hard rock, the shield features a reinforced digger arm engineered to accommodate a hydraulic drum cutter (aka, road header) for use in formations too hard for standard bucket teeth.
Please visit our case study page to learn more about this project.
96″ hand mining shield
Atkinson
Segmented shield design for transport through a smaller diameter tunnel. Integrated thrust system and removable sand shelves. Delivered in 8 weeks from purchase order.
72″ Hand Mining Shield
Thalle
Custom shield with protective hood, hydraulic articulation system, sand shelves & closure doors.
Interested in a Project?
Partner with Kelley Engineered Equipment to bring expert insight and innovative solutions to your next project. Our team is committed to delivering customized engineering support and unwavering dedication to your success.