# Relationship history for MSHA mine 1516650

Current hierarchy: **Jimmy W  Tackett → Gemco Energies, Inc. → Sugarloaf**

- 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:** Jrc Land & Equipment Company → Sugarloaf; 1987-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jacob Coal Company → Sugarloaf; 1989-06-01 to 1989-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Page Roger → Sugarloaf; 1989-06-01 to 1989-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Page Roger → Jacob Coal Company; 1989-06-01 to 1989-10-04; source msha-controller-operator-history
- **operator_operates_mine:** Joshua Coal Company Inc → Sugarloaf; 1989-10-05 to 1989-12-10; source msha-controller-operator-history
- **controller_controls_mine:** Howell Franklin → Sugarloaf; 1989-10-05 to 1989-12-10; source msha-controller-operator-history
- **controller_controls_operator:** Howell Franklin → Joshua Coal Company Inc; 1989-10-05 to 1989-12-10; source msha-controller-operator-history
- **operator_operates_mine:** Robin Lynn Coal Company → Sugarloaf; 1989-12-11 to 1990-01-25; source msha-controller-operator-history
- **controller_controls_mine:** Goble Jeff A & Raymond Jr → Sugarloaf; 1989-12-11 to 1990-01-25; source msha-controller-operator-history
- **controller_controls_operator:** Goble Jeff A & Raymond Jr → Robin Lynn Coal Company; 1989-12-11 to 1990-01-25; source msha-controller-operator-history
- **operator_operates_mine:** T L C Coal Company Inc → Sugarloaf; 1990-01-26 to 1990-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Dye Litten Jimmy → Sugarloaf; 1990-01-26 to 1990-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Dye Litten Jimmy → T L C Coal Company Inc; 1990-01-26 to 1990-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Nats Creek Mining Company Inc → Sugarloaf; 1990-07-12 to 2001-08-29; source msha-controller-operator-history
- **controller_controls_operator:** Jrc Land & Equipment Company → Nats Creek Mining Company Inc; 1990-07-12 to 2001-08-29; source msha-controller-operator-history
- **controller_controls_mine:** Jimmy W  Tackett et al → Sugarloaf; 1995-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Roger  Coleman → Sugarloaf; 1999-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mulligan Mining Inc. → Sugarloaf; 2001-08-30 to 2002-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Tony Carlis  Mahon → Sugarloaf; 2001-08-30 to 2002-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Tony Carlis  Mahon → Mulligan Mining Inc.; 2001-08-30 to 2002-04-14; source msha-controller-operator-history
- **operator_operates_mine:** R. & B. Enterprises, Inc. → Sugarloaf; 2002-04-15 to 2002-08-04; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Coleman → R. & B. Enterprises, Inc.; 2002-04-15 to 2002-08-04; source msha-controller-operator-history
- **operator_operates_mine:** Gemco Energies, Inc. → Sugarloaf; 2002-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy W  Tackett et al → Gemco Energies, Inc.; 2002-08-05 to current/open; source msha-controller-operator-history