# Relationship history for MSHA mine 1517064

Current hierarchy: **Jerry  Volk; Bob  Bays → Dusty Diamond Company Inc → Island Creek #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Costain Group PLC → Island Creek #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Costain Coal Inc → Island Creek #1; 1991-04-01 to 1997-07-20; source msha-controller-operator-history
- **controller_controls_operator:** Costain Group PLC → Costain Coal Inc; 1991-04-01 to 1997-07-20; source msha-controller-operator-history
- **controller_controls_mine:** Iracoal Incorporated → Island Creek #1; 1997-01-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lodestar Energy, Inc → Island Creek #1; 1997-07-21 to 2002-11-25; source msha-controller-operator-history
- **controller_controls_operator:** Iracoal Incorporated → Lodestar Energy, Inc; 1997-07-21 to 2002-11-25; source msha-controller-operator-history
- **controller_controls_mine:** Ocie A  May → Island Creek #1; 2001-09-21 to 2003-07-13; source msha-controller-operator-history
- **operator_operates_mine:** M & D Pipeline Inc → Island Creek #1; 2002-11-26 to 2005-10-10; source msha-controller-operator-history
- **controller_controls_operator:** Ocie A  May → M & D Pipeline Inc; 2002-11-26 to 2003-07-13; source msha-controller-operator-history
- **controller_controls_mine:** Susan  Branham → Island Creek #1; 2003-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Susan  Branham → M & D Pipeline Inc; 2003-07-14 to 2005-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Jerry  Volk  et al → Island Creek #1; 2004-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dusty Diamond Company Inc → Island Creek #1; 2005-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Volk  et al → Dusty Diamond Company Inc; 2005-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bob  Bays  et al → Dusty Diamond Company Inc; 2005-10-11 to current/open; source msha-controller-operator-history