{"data":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-13T11:19:05.459773+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"3607747","name":"Boyers"},"operator":{"type":"operator","id":"L00874","name":"Allegheny Mineral Corp."},"controller":{"type":"controller","id":"M00734","name":"Snyder Associated Companies Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00187","name":"Medusa Corp"},"object":{"type":"mine","id":"3607747","name":"Boyers"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|M00187|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00734","name":"Snyder Associated Companies Inc"},"object":{"type":"mine","id":"3607747","name":"Boyers"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|M00734|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11978","name":"C & C Drilling Inc"},"object":{"type":"mine","id":"3607747","name":"Boyers"},"validFrom":"1985-10-01","validTo":"1990-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|L11978|1985-10-01|1990-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09226","name":"Leonard  Chutz"},"object":{"type":"mine","id":"3607747","name":"Boyers"},"validFrom":"1985-10-01","validTo":"1990-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|M09226|1985-10-01|1990-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09226","name":"Leonard  Chutz"},"object":{"type":"operator","id":"L11978","name":"C & C Drilling Inc"},"validFrom":"1985-10-01","validTo":"1990-05-31","current":false,"derived":true,"evidenceMineId":"3607747","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|L11978|1985-10-01|M09226|1985-10-01|145910"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08827","name":"Joseph  Aloe et al"},"object":{"type":"mine","id":"3607747","name":"Boyers"},"validFrom":"1989-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|M08827|1989-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00228","name":"Medusa Aggregates Company"},"object":{"type":"mine","id":"3607747","name":"Boyers"},"validFrom":"1990-06-01","validTo":"1994-05-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|L00228|1990-06-01|1994-05-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00187","name":"Medusa Corp"},"object":{"type":"operator","id":"L00228","name":"Medusa Aggregates Company"},"validFrom":"1990-06-01","validTo":"1994-05-01","current":false,"derived":true,"evidenceMineId":"3607747","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|L00228|1990-06-01|M00187|1950-01-01|107020"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13530","name":"Quality Aggregates Inc"},"object":{"type":"mine","id":"3607747","name":"Boyers"},"validFrom":"1994-05-02","validTo":"2013-06-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|L13530|1994-05-02|2013-06-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08827","name":"Joseph  Aloe et al"},"object":{"type":"operator","id":"L13530","name":"Quality Aggregates Inc"},"validFrom":"1994-05-02","validTo":"2013-06-25","current":false,"derived":true,"evidenceMineId":"3607747","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|L13530|1994-05-02|M08827|1989-09-01|144170"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00874","name":"Allegheny Mineral Corp."},"object":{"type":"mine","id":"3607747","name":"Boyers"},"validFrom":"2013-06-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|L00874|2013-06-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00734","name":"Snyder Associated Companies Inc"},"object":{"type":"operator","id":"L00874","name":"Allegheny Mineral Corp."},"validFrom":"2013-06-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"3607747","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607747|L00874|2013-06-26|M00734|1950-01-01|114536"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3607747","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}