# Relationship history for MSHA mine 4202447

Current hierarchy: **Bill  Gaines → MONUMENT RESOURCES → WP#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:** Bill  Gaines et al → WP#1; 2004-09-16 to 2013-12-31; source msha-controller-operator-history
- **operator_operates_mine:** MONUMENT RESOURCES → WP#1; 2006-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Gaines et al → MONUMENT RESOURCES; 2006-06-22 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Wayland  Lafont et al → MONUMENT RESOURCES; 2006-06-22 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Bill  Gaines → WP#1; 2014-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Gaines → MONUMENT RESOURCES; 2014-01-01 to current/open; source msha-controller-operator-history