{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Roof support in coal mines in the Irwin, Greensburg and Latrobe Basins, Westmoreland County, Pa","author_name":"J. W. Paul","thumbnail_url":"https://www.ebooknetworking.net/books/B00/41R/bigB0041RSMNU.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0041RSMNU.html\">Roof support in coal mines in the Irwin, Greensburg and Latrobe Basins, Westmoreland County, Pa</a>","width":400,"height":300}