digging. often with special machinery and shoring or other supports. below the surface of the ground without an open trench. Method for installation of underground utilities that minimizes cutting of tree roots or damage to hardscape or existing utilities (contrast with horizontal boring and trenching).
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Tunneling or tunnelling may refer to:
- Digging tunnels (the literal meaning)
- Quantum tunneling, the quantum-mechanical effect where a particle crosses through a classically forbidden potential energy barrier
- Tunneling (fraud), a fraud committed by a company's own management or by major shareholders
- Tunneling protocol, transmitting one computer network protocol that is encapsulated inside another network protocol