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.
For safety reason it is required to check periodically concentration of non- flammable components in dust deposited in coal mines entries . The traditional procedurę requires the dust samples to be collected in locations determined by safety regulations and transport them to the surface where the concentration of non- flammable components can be evaluated in the laboratory. It would greatly simplified...
In the paper the amended mining regulations on the assessment criteria of zones protecting against coal dust explosion were discussed. The influence of basic factors neutralising coal dust on degree of its explosibility and the reasons for changing the basic concepts characterising coal dust explosion hazard were described. The possibility of applying checking criterion of protecting zone performed...
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.