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An annual policy forum on electricity restructuring will be directed at policy makers , including representatives from the Energy Commission , the Public Utilities Commission , the Independent System Operator and the State Legislature . The syntactic structure is essentially a tree , but it has additional temporal operators ( such as co_start ) and spatial operators ( such as hor and ver ) indicated by dotted lines . In addition to the coal mine sweep , top MSHA officials will conduct a conference call with interested mine operators and other mining industry personnel concerning miner safety issues at their operations . If the operator 's hands stray into the camera 's field while filming , their shadow may obscure the text . " It is of the utmost importance that both miners and mine operators understand the changes winter weather brings to the underground mine environment and the precautions they should take to avoid tragic mining accidents this time of year , " said Dave D. Lauriski , assistant secretary of labor for mine safety and health . Her tips and tricks eventually morphed into a sophisticated digital guide that operators could quickly search . They are the size of the operator 's business , the history of violations cited at the mine , degree of negligence , gravity of the violation , demonstrated good faith in correcting the violation , and the effect of the penalty on the operator 's ability to continue in business . In this aspect , the involvement of both public and private transport operators is essential in order to ensure that the public receive a good quality of service . If inspectors consider that in pursuance of paragraphs 72 and 73 , particular operations in a facility should be carried out by the operator , they shall make a request therefor . Water Treatment Plant Operator , Scuba Diving Certificate and Coast Guard small boat certification are a plus .