# Relationship history for MSHA mine 2901878

Current hierarchy: **Fish John C → Dane Mining & Exploration Ltd → Volcano Mine**

- 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:** Holliday Ira → Volcano Mine; 1980-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mina Amigos Mining Company → Volcano Mine; 1982-01-01 to 1987-04-28; source msha-controller-operator-history
- **controller_controls_operator:** Holliday Ira → Mina Amigos Mining Company; 1982-01-01 to 1987-04-28; source msha-controller-operator-history
- **operator_operates_mine:** Gold Hills Minerals → Volcano Mine; 1987-04-29 to 1989-05-18; source msha-controller-operator-history
- **controller_controls_mine:** Higginbotham Arvil → Volcano Mine; 1987-04-29 to 1989-05-18; source msha-controller-operator-history
- **controller_controls_operator:** Higginbotham Arvil → Gold Hills Minerals; 1987-04-29 to 1989-05-18; source msha-controller-operator-history
- **operator_operates_mine:** Volcano Mining Partners → Volcano Mine; 1989-05-19 to 1994-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Wilkins Arnold Et Al → Volcano Mine; 1989-05-19 to 1994-07-12; source msha-controller-operator-history
- **controller_controls_operator:** Wilkins Arnold Et Al → Volcano Mining Partners; 1989-05-19 to 1994-07-12; source msha-controller-operator-history
- **operator_operates_mine:** Dane Mining & Exploration Ltd → Volcano Mine; 1994-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fish John C → Volcano Mine; 1994-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fish John C → Dane Mining & Exploration Ltd; 1994-07-13 to current/open; source msha-controller-operator-history