# Relationship history for MSHA mine 0203066

Current hierarchy: **Martin J Colbaugh; Joshua  Colbaugh → Kingman Turquoise Mining Co → Kingman Turquoise Mining Co**

- 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:** Kingman Turquoise Mining Co → Kingman Turquoise Mining Co; 2004-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Monty P  Nichols et al → Kingman Turquoise Mining Co; 2004-10-22 to 2020-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Monty P  Nichols et al → Kingman Turquoise Mining Co; 2004-10-22 to 2020-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Martin J  Colbaugh et al → Kingman Turquoise Mining Co; 2004-10-22 to 2020-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Joshua  Colbaugh et al → Kingman Turquoise Mining Co; 2021-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joshua  Colbaugh et al → Kingman Turquoise Mining Co; 2021-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin J Colbaugh et al → Kingman Turquoise Mining Co; 2021-01-01 to current/open; source msha-controller-operator-history