# Relationship history for MSHA mine 3608486

Current hierarchy: **David C  Klementik → Gray Mining Company Inc → Yellow Run**

- 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:** American Dominion Inc → Yellow Run; 1994-10-01 to 1997-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Steven  Harris → Yellow Run; 1994-10-01 to 1997-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Steven  Harris → American Dominion Inc; 1994-10-01 to 1997-05-31; source msha-controller-operator-history
- **controller_controls_mine:** David C  Klementik  et al → Yellow Run; 1994-10-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Typlex Inc → Yellow Run; 1997-06-01 to 1999-11-30; source msha-controller-operator-history
- **controller_controls_mine:** John H  Munjack → Yellow Run; 1997-06-01 to 1999-11-30; source msha-controller-operator-history
- **controller_controls_operator:** John H  Munjack → Typlex Inc; 1997-06-01 to 1999-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Typlex Inc → Yellow Run; 1999-12-01 to 2003-08-30; source msha-controller-operator-history
- **controller_controls_mine:** David Scott  Dinning → Yellow Run; 1999-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David Scott  Dinning → Typlex Inc; 1999-12-01 to 2003-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Gray Mining Company Inc → Yellow Run; 2003-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David C  Klementik  et al → Gray Mining Company Inc; 2003-08-31 to current/open; source msha-controller-operator-history