According to WHO, at any one time, around 50 per cent of medical equipment in lowand middle-income countries cannot be used because of lack of maintenance or spare parts.1 We have found that unwillingness or inability to repair equipment and put it back in use is also a major cause. New equipment is made available by different international non-government organisations (INGOs) competing with on...

Unprecedented floods in 2014 caused huge consequences on Serbian lignite opencast mines, such as halt of coal production and damages the mining equipment. Three equipment revitalization options were urgently assessed to continue with mine Tamnava-West Field. This paper compares economic risks three investment for Field revitalization, based this experience probable risk a repeated event. The re...

Severe operating conditions of mining equipment have a negative impact on the life rolling contact bearings used in such equipment. The main reasons for premature failure include, first all, poor quality bearing steel as delivered and defects their subsequent heat treatment. abovementioned result splitting bearings, metal shelling appearance potholes tracks, well intense abrasive wear. Neverthe...