# Relationship history for MSHA mine 4002127

Current hierarchy: **Chester  Franklin → Dalco Coal Of Tennessee Llc → Tipple #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Marcom James B → Tipple #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shemco Inc → Tipple #1; 1976-10-01 to 1994-06-21; source msha-controller-operator-history
- **controller_controls_operator:** Marcom James B → Shemco Inc; 1976-10-01 to 1994-06-21; source msha-controller-operator-history
- **controller_controls_mine:** Gregory Sterling Jack → Tipple #1; 1990-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** West Prg Kew Preparation Plant → Tipple #1; 1994-06-22 to 1998-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Onyx International Inc & Coalfield Consultants Inc → Tipple #1; 1994-06-22 to 1998-04-19; source msha-controller-operator-history
- **controller_controls_operator:** Onyx International Inc & Coalfield Consultants Inc → West Prg Kew Preparation Plant; 1994-06-22 to 1998-04-19; source msha-controller-operator-history
- **operator_operates_mine:** East Fork → Tipple #1; 1998-04-20 to 1999-03-28; source msha-controller-operator-history
- **controller_controls_operator:** Gregory Sterling Jack → East Fork; 1998-04-20 to 1999-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Chester  Franklin → Tipple #1; 1999-01-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dalco Coal Of Tennessee Llc → Tipple #1; 1999-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chester  Franklin → Dalco Coal Of Tennessee Llc; 1999-03-29 to current/open; source msha-controller-operator-history