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Using industrial materials and technology , I draw analogies to the respiratory , nervous and circulatory systems ; the skin , the brain , vision and perception - exploring our changing relationship to our physical selves and our environment . Joe saw the tubes as centrifuge rotors that could be used to process uranium into weapons-grade material . However , sometimes there are needs to make copyrighted and / or restricted material available via the Web and it is legal to do so . If you prefer classes where material is presented to you by the instructor , or if you need the structure of in-class lectures to absorb material ( which many students do need ) , then this is not the class for you . Safety Executive that EPIC ( NTO ) Ltd. and all the Higher and Further Education institutions using the materials freely copy and distribute the materials within it , in order to best meet the objective of ensuring graduates in quarries-related disciplines are fully aware of the principals of risk management and their responsibilities as managers and professionals . " ore " here is somewhat unusual , but we are assuming that the economic benefit of the use of these materials is established . The General Strike Collection comprises material collected by library staff in 1926 and includes TUC documents and bulletins , printed publications and newspapers from Britain and overseas . However , for the microprismatic materials , the CV value depends on the type of prismatic sheeting . The Copyright Management Service has been established to provide enhanced support for academic and teaching staff to improve copyright compliance of teaching and learning materials , with particular attention to strategic programs and courses tagged for online delivery . You must read these articles carefully and prepare a short summary ( including a few questions or insightful comments about the material ) .