Operation of tunnels and underground structures for others; Business management of tunnels and underground structures for others; Providing of underground tunnels as a service; Construction of underground real estate using tunnels; Providing drilling services for others; Business management of tunnels for transportation; Business management of tunnels for energy storage; Leasing of tunnels, rights to subsurface real estate, and underground structures; Business management of utility tunnels; Business management of tunnels for power lines, fiber, and pipelines; Business management of tunnels for water conveyance; Business management of tunnels for delivery and transportation; Operation of large diameter utility tunnels; Operation of large diameter tunnels for storage of sensitive equipment to protect it from EMP or solar storm activity; Operation of large diameter tunnels for underground real estate; Operation of large diameter tunnels for offices; Operation of large diameter tunnels for storage; Operation of large diameter tunnels for manufacturing; Operation of large diameter tunnels for housing; Business management of subsurface real estate

Construction and construction management of tunnels and underground structures; Consulting in the field of construction and construction management of tunnels and underground structures; Providing information about construction of tunnels and underground structures; Construction of civil engineering structures underground; Construction of underground boring tunnels; Construction management of tunnels for others; Construction and excavation services, namely, directional drilling, tunneling and earth boring; Directional drilling, tunneling and earth boring tunnels for utilities; Directional drilling, tunneling and earth boring for power lines, fiber, pipelines, and transportation uses; Construction services, namely, underground drilling of tunnels and underground structures; Construction of underground utility lines; Power construction services; Construction management of tunnels and underground structures for others; Underground boring as a service; Construction of large diameter tunnels; Construction and construction management of large diameter utility tunnels; Construction and excavation services, namely rock drilling; Trenchless tunnel construction services; Directional drilling; Piping lining; Pipeline construction and pipeline installation; Plumbing services, namely installing, repairing, and replacing sewer pipes, water pipes, and gas pipes using directional drilling methods; Inspection services in the course of construction of utility tunnels

Design of tunnels and underground structures; Providing online non-downloadable software used for management, control, mapping, operation, and leasing of tunnels, subsurface real estate, and underground structures; Consulting services in the field of construction of tunnels and underground structures; Maintenance of machinery and equipment used in drilling and boring underground; Engineering services in the field of construction; Engineering analysis and consultation services in the field of construction; Technical advice and technical assistance, namely, engineering services in the field of utility tunnel design and maintenance; Structural analysis and expertise services for underground utility tunnels; Providing online software for design, management, and operation of tunnels; Online software for management of underground real estate; Design and management of underground real estate