# Relationship history for MSHA mine 1515735

Current hierarchy: **Bee  Handshoe → Viper Coal LLC → #12**

- 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:** Little Morgan Coal Company Inc → #12; 1986-09-01 to 2007-02-22; source msha-controller-operator-history
- **controller_controls_mine:** Bennett  Quillen → #12; 1986-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bennett  Quillen → Little Morgan Coal Company Inc; 1986-09-01 to 2007-02-22; source msha-controller-operator-history
- **controller_controls_mine:** John R  Grounds → #12; 2006-12-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Goose Creek Energy Inc → #12; 2007-02-23 to 2008-03-02; source msha-controller-operator-history
- **controller_controls_operator:** John R  Grounds → Goose Creek Energy Inc; 2007-02-23 to 2008-03-02; source msha-controller-operator-history
- **operator_operates_mine:** B & K Coal Inc → #12; 2008-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bee  Handshoe → #12; 2008-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bee  Handshoe → B & K Coal Inc; 2008-03-03 to current/open; source msha-controller-operator-history