Leasing of tunnels, rights to subsurface real estate, and underground structures; Management, rental, and leasing of underground real estate in the form of large diameter tunnels; Management, rental, and leasing of offices in the form of large diameter tunnels; Management, rental, and leasing of commercial real estate for manufacturing in the form of large diameter tunnels; Management, rental, and leasing of housing in the form of large diameter tunnels; management of underground 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; Construction of underground real estate using tunnels; Providing drilling services for others; 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; Operation of tunnels and underground structures for others, namely undertaking regular maintenance, servicing and checks of tunnels and underground structures including utility tunnels, and tunnels used for real estate, offices, storage, manufacturing or housing; operation of tunnels including transport tunnels; Technical advice and technical assistance, namely, engineering services in the field of utility tunnel maintenance.

Providing and leasing of storage in large diameter tunnels, including storage for sensitive equipment to protect it from EMP or solar storm activity in large diameter 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; Technical advice and technical assistance, namely, engineering services in the field of utility tunnel design; Structural analysis and technical expertise advisory services for underground utility tunnels; Providing online software for design, management, and operation of tunnels; Online software for management of underground real estate; Design of underground real estate.