# Relationship history for MSHA mine 1517988

Current hierarchy: **Jeff  Norman → JLN Construction Company → JLN #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:** Anthony  McPeek → JLN #1; 1988-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ricky  Blair → JLN #1; 1997-01-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Arc Energies Inc → JLN #1; 1997-10-01 to 1998-04-26; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  McPeek → Arc Energies Inc; 1997-10-01 to 1998-04-26; source msha-controller-operator-history
- **operator_operates_mine:** Blair Coal Company Inc → JLN #1; 1998-04-27 to 2001-10-28; source msha-controller-operator-history
- **controller_controls_operator:** Ricky  Blair → Blair Coal Company Inc; 1998-04-27 to 2001-10-28; source msha-controller-operator-history
- **operator_operates_mine:** JLN Construction Company → JLN #1; 2001-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Norman → JLN #1; 2001-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Norman → JLN Construction Company; 2001-10-29 to current/open; source msha-controller-operator-history