# Relationship history for MSHA mine 4605600

Current hierarchy: **Carpenter M Wesley → Lazy Ace Coal Company Inc → Jumbo No 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

- **operator_operates_mine:** Clemens Coal Company → Jumbo No 2; 1977-06-01 to 1981-09-02; source msha-controller-operator-history
- **controller_controls_mine:** Diggs Thomas R Et Al → Jumbo No 2; 1977-06-01 to 1981-09-02; source msha-controller-operator-history
- **controller_controls_operator:** Diggs Thomas R Et Al → Clemens Coal Company; 1977-06-01 to 1981-09-02; source msha-controller-operator-history
- **operator_operates_mine:** Silver Eagle Mining Inc → Jumbo No 2; 1981-09-03 to 1988-02-17; source msha-controller-operator-history
- **controller_controls_mine:** Silver Eagle Mining Inc → Jumbo No 2; 1981-09-03 to 1988-02-17; source msha-controller-operator-history
- **controller_controls_operator:** Silver Eagle Mining Inc → Silver Eagle Mining Inc; 1981-09-03 to 1988-02-17; source msha-controller-operator-history
- **controller_controls_mine:** Petry James H → Jumbo No 2; 1986-08-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Diamond J Mining Inc → Jumbo No 2; 1988-02-18 to 1989-07-13; source msha-controller-operator-history
- **controller_controls_operator:** Petry James H → Diamond J Mining Inc; 1988-02-18 to 1989-07-13; source msha-controller-operator-history
- **controller_controls_mine:** A F Budge Mining Ltd → Jumbo No 2; 1989-03-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Elk River Sewell Coal Company Inc → Jumbo No 2; 1989-07-14 to 1990-12-02; source msha-controller-operator-history
- **controller_controls_operator:** A F Budge Mining Ltd → Elk River Sewell Coal Company Inc; 1989-07-14 to 1990-12-02; source msha-controller-operator-history
- **controller_controls_mine:** Carpenter M Wesley → Jumbo No 2; 1990-05-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lazy Ace Coal Company Inc → Jumbo No 2; 1990-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carpenter M Wesley → Lazy Ace Coal Company Inc; 1990-12-03 to current/open; source msha-controller-operator-history