# Relationship history for MSHA mine 2602585

Current hierarchy: **Brett  Shelton; Edgar  Haro; Blake  Burton → Shelton's → Shelton Nevada BLM Pit**

- 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:** Shelton's → Shelton Nevada BLM Pit; 2006-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brett  Shelton et al → Shelton Nevada BLM Pit; 2006-02-14 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Brett  Shelton et al → Shelton's; 2006-02-14 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_operator:** David W  Shelton et al → Shelton's; 2006-02-14 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Blake  Burton et al → Shelton Nevada BLM Pit; 2024-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blake  Burton et al → Shelton's; 2024-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edgar  Haro et al → Shelton's; 2024-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brett  Shelton et al → Shelton's; 2024-01-01 to current/open; source msha-controller-operator-history