4850 Shaft Extraction Options Monorail Crane Mobile Pick

4850 Shaft Extraction Options • Monorail Crane • Mobile Pick and Carry Crane • Winch System - Fixed - Moveable • Bridge Crane 1 05. 26. 2021 AMTT 4850 Shaft Extraction Options

Monorail Crane 4850 Plan View DESCRIPTION 4850 3 D View Monorail crane(s) running in east/west direction centered against the relevant shaft compartments. Comments • Option to have swinging monorail sections. • Option to have telescopic boom option. ADVANTAGES • Flexibility to handle not only extraction but lifting onto transport conveyances. • Swivel option to handle side load. • Closer end approach. DISADVANTAGES • Monorail centered against the North-Skip compartment would be shortened to allow for beam turnout, decreasing horizontal movement. • Mounting to brow ceiling may be difficult. COST • No formal estimate received Monorail example tramway 2 05. 26. 2021 AMTT 4850 Shaft Extraction Options

Mobile Pick and Carry Crane DESCRIPTION Mobile lifting solution with one directional lifting arm. Comments • Need to define capacity and usage limits. ADVANTAGES • Can be used in other installation locations underground. • Will not have to make any facility modifications or infrastructure installations. DISADVANTAGES • • May be difficult to replicate multiple material movements. Movement of equipment through shaft to 4850. Underground equipment storage need. Possible traction/slippage problems. COST • 2021 Valla V 120 R All-Electric Radio Remote Controlled Crane ~$250 K - $300 K 3 05. 26. 2021 AMTT 4850 Shaft Extraction Options

Winch System DESCRIPTION 4850 Section View One or more motorized winches mounted on the cavern brow opposite of the shaft and/or one or more motorized winches connectable to selected locations as needed. Comments • Winches could be possibly mounted on a steel I-beam relocatable for use against different compartments. • Possible to use this in conjunction with monorail crane system. ADVANTAGES • • Possibility to use winch as a lifting device. Cost efficient. Flexibility to use as a pulling device for each compartment. Simple solution. DISADVANTAGES 4850 Plan View Apply higher side forces. Slow system. Cable management. Needs an accompanying lifting solution to handle placement onto conveyances. • Limited to selected connecting points. • • COST • No formal estimate received. 4 05. 26. 2021 AMTT 4850 Shaft Extraction Options

Bridge Crane DESCRIPTION One bridge crane installed on the east side of shaft operation will span across all 3 compartments. Comments • Need to define capacity and usage limits. Free standing bridge crane 4850 Section View ADVANTAGES • Flexibility to handle not only extraction but lifting onto transport conveyances. • More flexibility for handling all material. DISADVANTAGES • Approach is less than the monorail crane option. • Possible side load stress on runway beams. COST • Preliminary material estimate received ~$140 K • Does not include the cost of any special engineering. • May cost more for underground assembly. 4850 Plan View 5 05. 26. 2021 AMTT 4850 Shaft Extraction Options

Deliverable Status Check Primary Deliverables 6 Timeline Status 1. Team kickoff 2. Review safety standards that are applicable for the moving material and the equipment required to do so. 0 -2 months The LBNF / DUNE Far Site Integration ES&H Regulations and Standards for Material Handling and Transportation document has been approved. Discussion related to the Ross Cage is still needed and will take place outside of the AMTT. 3. Evaluate options and specifications for material handling equipment (crane & hoists) needed at the base of the Ross Shaft for shaft extraction and loading of material onto transport carts. 2 -6 months Options have been identified and are currently being evaluated. 4. Develop a Ross Headframe material handling equipment inventory and determine if the current inventory is capable of handling the awkward material under review. 2 -8 months Preliminary inventory has been completed; further analysis is needed to determine if the current equipment is sufficient. 5. Develop schedule for lift tests of prototype items. 4 -12 months 6. Review specifications for transport carts. 6 -12 months 7. Develop preliminary lift plans. 8 -18 months Need to have a discussion with the APA team and Conventional Facilities team to determine a viable timeframe. Some preliminary discussions have taken place. Are there other items that can be tested? Request for Information was sent out in November 2020, received 3 responses. Sub-group should provide the basic specifications for the transport carts. No action taken. 05. 26. 2021 Jan 2021 AMTT 4850 Shaft Extraction Options Complete!