Christensen v. United States, et al., 288 Fed. Appx. 445 (10th Cir. 2008)

(plaintiff permanently injured in fall from horse that tripped on loop of exposed, non-live grounding wire attached to power pole maintained by defendant; grounding wire associated with installation of water pipeline on easement other defendants had obtained from the government; trial court granted summary judgment for all defendants on plaintiff’s negligence claims – plaintiff failed to show breach of duty owed to him; defendants did not have actual or constructive knowledge that unsafe condition existed and sufficient time to remedy situation; no heightened duty of care because wire not live; no evidence presented that water pipe installation disturbed grounding wire or rod; no evidence of causal connection).