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.
Intelligent mining of coal face is the basis to achieve automatic mining, electro-hydraulic control technology is the core of the intelligent mining. The 13266 coal face of Wannian colliery used the PM32 electric hydraulic control system of hydraulic powered support, realized the automatic drop support, move support, upper support and the monitoring and display of roof pressure, also realized the...
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.