{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.morvs.ai/api/v1/msha/by-controller?name=Mable%20M%20Nelson","controller":"Mable M Nelson","_source":{"data_provider":"AI Analytics","brand_name":"MORVS","brand_url":"https://morvs.ai/","data_provider_url":"https://api.morvs.ai","license":"https://creativecommons.org/publicdomain/zero/1.0/","primary_source":"https://arlweb.msha.gov/OpenGovernmentData/OGIMSHA.asp","generated_at":"2026-10-31T19:53:37.949Z"},"count":3,"truncated":false,"mines":[{"mine_id":"2500297","mine_name":"NELSON PIT #1","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"NE","county_name":"Loup","controller_name":"Mable M Nelson","operator_name":"Nelson Sand & Gravel Company","num_employees":0,"primary_canvass":"SandAndGravel","canonical_url":"https://api.morvs.ai/mine/2500297"},{"mine_id":"2501136","mine_name":"Nelson Pit #2","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"NE","county_name":"Loup","controller_name":"Mable M Nelson","operator_name":"Nelson Sand & Gravel Company","num_employees":null,"primary_canvass":"SandAndGravel","canonical_url":"https://api.morvs.ai/mine/2501136"},{"mine_id":"2501157","mine_name":"Nelson Pit #3","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"NE","county_name":"Valley","controller_name":"Mable M Nelson","operator_name":"Nelson Sand & Gravel Company","num_employees":null,"primary_canvass":"SandAndGravel","canonical_url":"https://api.morvs.ai/mine/2501157"}]}