The document provides information on problem solving and root cause analysis processes used at Kriel Colliery. It discusses: - Why root cause analysis is used, which is to identify origins of problems and eliminate possible reoccurrences. - The general problem solving process, which includes identifying issues, describing the problem, specifying the root cause, identifying countermeasures, and implementing solutions. - The root cause analysis process, which uses a 5Whys technique to iteratively ask why a problem is occurring to determine the underlying cause. Steps include establishing possible causes, validating causes, and developing and implementing corrective actions. - Examples of applying the 5Whys technique to determine root causes for different problems like equipment