# Relationship history for MSHA mine 1517004

Current hierarchy: **Horizon Natural Resources Incorporated → Ikerd-Bandy Company Inc → Bear Branch #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:** Andalex Resources B V → Bear Branch #1; 1950-01-01 to 2006-08-08; source msha-controller-operator-history
- **controller_controls_mine:** Quesenberry Gerald Et Al → Bear Branch #1; 1977-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James J  Kocian et al → Bear Branch #1; 1985-02-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ace Coal Company Inc → Bear Branch #1; 1990-11-01 to 1991-07-21; source msha-controller-operator-history
- **controller_controls_operator:** Quesenberry Gerald Et Al → Ace Coal Company Inc; 1990-11-01 to 1991-07-21; source msha-controller-operator-history
- **operator_operates_mine:** Andalex Resources Inc → Bear Branch #1; 1991-07-22 to 1993-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Andalex Resources B V → Andalex Resources Inc; 1991-07-22 to 1993-04-29; source msha-controller-operator-history
- **operator_operates_mine:** C & D Bulldozing & Excavating Company → Bear Branch #1; 1993-04-30 to 1994-09-28; source msha-controller-operator-history
- **controller_controls_mine:** Collett Harold → Bear Branch #1; 1993-04-30 to 1994-09-28; source msha-controller-operator-history
- **controller_controls_operator:** Collett Harold → C & D Bulldozing & Excavating Company; 1993-04-30 to 1994-09-28; source msha-controller-operator-history
- **operator_operates_mine:** Ikerd-Bandy Company Inc → Bear Branch #1; 1994-09-29 to 1997-10-29; source msha-controller-operator-history
- **controller_controls_operator:** James J  Kocian et al → Ikerd-Bandy Company Inc; 1994-09-29 to 1997-10-29; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Bear Branch #1; 1997-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ikerd-Bandy Company Inc → Bear Branch #1; 1997-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Ikerd-Bandy Company Inc; 1997-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert E  Murray → Bear Branch #1; 2006-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Murray → Andalex Resources Inc; 2006-08-09 to 1993-04-29; source msha-controller-operator-history