The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The setup entry is driven at the starting line of a longwall panel and used to set up equipment, from which mining activities begin. The roof stability of setup entry roof with large span is a major concern in deep underground coal mines, especially when the surrounding strata are weak and fractured. Large-span setup entry roofs at depth induce a serious danger of roof fall and difficulty in the determination...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.