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spec: The definitional and line-drawing problem is far less significant when OSHA merely uses a unit of industries and operations for analytical but not compliance purposes , and when it sets a PEL in the aggregate , i.e ., when its analysis is limited to determining whether a particular PEL is the lowest feasible level for affected industries as a whole . `` Google is going to lose its edge in the consumer world eventually - everybody does - something else will come along and be the next big thing , and at that point Google is going to have to have a very robust enterprise search platform that can compete head-to-head in any engagement . Trends in the intensity of electricity use in the aggregate sectors are the net result of several ( possibly counteracting ) factors , such as cumulative efficiency changes , demographic shifts ( for example from geographical areas with typically high electricity intensities to areas with low ones , or vice versa ) , increased penetration of electricity-using equipment ( such as computers , electronic appliances , etc. ) , and so on . I had to backtrack a couple of times as I approached the bottom of the Redwall as the trail did not look familiar and was not well marked . According to the State , there is no federal or State law requiring that the health services be reimbursed individually , rather than in the aggregate . Casual employees have no guarantee of continuing work and each period of employment is legally separate . This is particularly relevant to the establishment of new protected areas . While the initial solicitation provided for award only in the aggregate for the entire quantity of trailers , it was amended to provide for award either in the aggregate or on the basis of seven individual DN groups . A technical exception is Hawking radiation , a quantum mechanical process first described by Steven Hawking , but this is unimaginably weak for the massive black holes of interest to astronomers .