# Relationship history for MSHA mine 3002760

Current hierarchy: **Richard  Forrestel Jr; Ryan  Forrestel → Cold Spring Construction Company → Gross 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Richard  Forrestel → Gross Pit; 1981-04-01 to 2020-11-22; source msha-controller-operator-history
- **operator_operates_mine:** Cold Spring Construction Company → Gross Pit; 1986-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Forrestel → Cold Spring Construction Company; 1986-09-01 to 2020-11-22; source msha-controller-operator-history
- **controller_controls_mine:** Ryan  Forrestel → Gross Pit; 2020-11-23 to 2022-04-18; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Forrestel → Cold Spring Construction Company; 2020-11-23 to 2022-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Ryan  Forrestel et al → Gross Pit; 2022-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Forrestel et al → Cold Spring Construction Company; 2022-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Forrestel Jr et al → Cold Spring Construction Company; 2022-04-19 to current/open; source msha-controller-operator-history