# Relationship history for MSHA mine 1102641

Current hierarchy: **Jimmy D  Kulbeth → Bill V Martin Mining Corp → Mine No 1-Rock Mine (Strip)**

- 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

- **operator_operates_mine:** Bill V Martin Mining Corp → Mine No 1-Rock Mine (Strip); 1978-05-01 to 1979-04-12; source msha-controller-operator-history
- **controller_controls_mine:** Daniel W  Bailey et al → Mine No 1-Rock Mine (Strip); 1978-05-01 to 1979-04-12; source msha-controller-operator-history
- **controller_controls_operator:** Daniel W  Bailey et al → Bill V Martin Mining Corp; 1978-05-01 to 1979-04-12; source msha-controller-operator-history
- **operator_operates_mine:** Bill V Martin Mining Corp → Mine No 1-Rock Mine (Strip); 1979-04-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jimmy D  Kulbeth → Mine No 1-Rock Mine (Strip); 1979-04-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy D  Kulbeth → Bill V Martin Mining Corp; 1979-04-13 to current/open; source msha-controller-operator-history