# Relationship history for MSHA mine 1516915

Current hierarchy: **Gary  Adams → Apollo Coal Company → Mine #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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Gary  Adams  et al → Mine #1; 1980-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & V Coal Company Inc → Mine #1; 1990-07-01 to 1995-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Dennis  Jones → Mine #1; 1990-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis  Jones → J & V Coal Company Inc; 1990-07-01 to 1995-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Apollo Coal Company → Mine #1; 1995-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Adams  et al → Apollo Coal Company; 1995-04-01 to current/open; source msha-controller-operator-history