# Relationship history for MSHA mine 1100726

Current hierarchy: **Foresight Energy Labor LLC → MaRyan Mining LLC → Shay #1 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

- **operator_operates_mine:** Monterey Coal Company → Shay #1 Mine; 1950-01-01 to 2009-01-21; source msha-controller-operator-history
- **controller_controls_mine:** Exxon Mobil Corp → Shay #1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Exxon Mobil Corp → Monterey Coal Company; 1950-01-01 to 2009-01-21; source msha-controller-operator-history
- **operator_operates_mine:** MaRyan Mining LLC → Shay #1 Mine; 2009-01-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Foresight Energy/ Murray Energy et al → Shay #1 Mine; 2009-01-22 to 2016-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Foresight Energy/ Murray Energy et al → MaRyan Mining LLC; 2009-01-22 to 2016-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Coalfield Transport Inc et al → MaRyan Mining LLC; 2009-01-22 to 2016-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Foresight Energy Labor LLC → Shay #1 Mine; 2016-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Foresight Energy Labor LLC → MaRyan Mining LLC; 2016-08-01 to current/open; source msha-controller-operator-history