# Relationship history for MSHA mine 1518954

Current hierarchy: **Rifle Coal Company; Anthony  Frederick → Associated Contracting LLC → Low Gap Surface**

- 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:** Anthony  Frederick et al → Low Gap Surface; 2000-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Beech Creek Coal Company LLC → Low Gap Surface; 2006-01-03 to 2006-04-04; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Miser  et al → Low Gap Surface; 2006-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Miser  et al → Beech Creek Coal Company LLC; 2006-01-03 to 2006-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Hall  et al → Beech Creek Coal Company LLC; 2006-01-03 to 2006-04-04; source msha-controller-operator-history
- **operator_operates_mine:** Mohawk Management, LLC → Low Gap Surface; 2006-04-05 to 2006-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Bruce M.  Hawkins → Low Gap Surface; 2006-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bruce M.  Hawkins → Mohawk Management, LLC; 2006-04-05 to 2006-07-12; source msha-controller-operator-history
- **operator_operates_mine:** Associated Contracting LLC → Low Gap Surface; 2006-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Frederick et al → Associated Contracting LLC; 2006-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rifle Coal Company et al → Associated Contracting LLC; 2006-07-13 to current/open; source msha-controller-operator-history