# Relationship history for MSHA mine 4604841

Current hierarchy: **Templeton James M → Pioneer Energy Inc → No 1**

- 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

- **operator_operates_mine:** Pioneer Energy Inc → No 1; 1975-01-01 to 1976-04-27; source msha-controller-operator-history
- **controller_controls_mine:** Perkins Guy W → No 1; 1975-01-01 to 1976-04-27; source msha-controller-operator-history
- **controller_controls_operator:** Perkins Guy W → Pioneer Energy Inc; 1975-01-01 to 1976-04-27; source msha-controller-operator-history
- **operator_operates_mine:** Pioneer Energy Inc → No 1; 1976-04-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Templeton James M → No 1; 1976-04-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Templeton James M → Pioneer Energy Inc; 1976-04-28 to current/open; source msha-controller-operator-history