Introduction of Network Coding Theory

Consider a network consisting of point-to-point communication channels. Each channel transmits information noiselessly subject to the channel capacity. Data is to be transmitted from the source node to a prescribed set of destination nodes. Given the transmission requirements, a natural question is whether the network can fulfill these requirements and how it can be done efficiently. In existing...

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COAL BLASTING

Authority for regulating blasting operations at coal mines comes from the Surface Coal Mining Land Conservation and Reclamation Act (SCMLCRA), which became effective February 1, 1983. The SCMLCRA is closely patterned after the federal Surface Mining Control and Reclamation Act of 1977 (SMCRA). The SCMLCRA has established air blast, ground vibration and fly rock standards, training, examination and...

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Mine Closure

MINE CLOSURE - INTRODUCTION  As we progress into the twenty-first century, there is increasing awareness of the need to provide for 'sustainability' of ecological and social settings in which mines are developed, operated and closed. The 'six tenets for sustainability of mining' provide the foundation for sustainability planning at a mine site. This gives rise to the need...

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