# Relationship history for MSHA mine 2602740

Current hierarchy: **Shane E  Cooper; Kenny J  Cooper → Titan Constructors, Inc. → Portable Crusher #2**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Kenny J  Cooper et al → Portable Crusher #2; 2005-08-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Titan Constructors, Inc. → Portable Crusher #2; 2013-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenny J  Cooper et al → Titan Constructors, Inc.; 2013-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shane E  Cooper et al → Titan Constructors, Inc.; 2013-03-27 to current/open; source msha-controller-operator-history