Ocr ABBYY FineReader 11.0 (Extended OCR) Ocr_converted abbyy-to-hocr 1.1.11 Ocr_module_version 0.0.14 Openlibrary_edition Tantalum usually occurs with the chemically-similar niobium, often in tantalite and columbite, coltan (columbite + tanatalite), or polychlore (niobium). Tantalum ores, often derived from pegmatites, comprise a wide variety of more than a hundred minerals, some of which contain uranium and/or thorium. Hence the mined ore and concentrate contain both these and their decay products in their crystal lattice. Concentration of the tantalum minerals is generally by gravity methods (as with mineral sands), so the lattice-bound radioisotope impurities if present will report with the concentrate. Terrestrial NORM consists of radioactive material that comes out of the Earth’s crust and mantle, and where human activity results in increased radiological exposure. The materials may be original (such as uranium and thorium) or decay products thereof, forming part of characteristic decay chain series, or potassium-40. The two most important chains providing nuclides of significance in NORM are the thorium series and the uranium series: In South Africa, HolGoun's Uranium and Power Project was investigating uranium recovery from the Springbok Flats coal field, estimated to contain 84,000 tU at grades of 0.06 to 0.10% U. The project is investigating the feasibility of mining the low-grade coal, using it to fire a conventional electricity generation plant, and extracting the uranium from the residual ash.

World of Norm – Jonathan Meres

I think the "WORLD OF NORM" is the worlds BEST book! Its a hilarious, funny, clever and exciting book. Its sure to make you laught. It seems like the whole world has gone mad. His dad’s obsessed with gas, his best friend has come down with a case of hormones and his brother is in dire need of deodorant. Looks like there’s going to be quite a stink. The amounts of radionuclides involved are noteworthy. US, Australian, Indian and UK coals contain up to about 4 ppm uranium, those in Germany up to 13 ppm, and those from Brazil and China range up to 20 ppm uranium. Thorium concentrations are often about three times those of uranium.NORM in the oil and gas industry poses a problem to workers particularly during maintenance, waste transport and processing, and decommissioning. In particular Pb-210 deposits and films, as a beta emitter, is only a concern when pipe internals become exposed. External exposure due to NORM in the oil and gas industry are generally low enough not to require protective measures to ensure that workers stay beneath their annual dose limits (such as set out by the IAEA basic safety standards). Internal exposures can be minimized by hygiene practices. Metals and smelting International Atomic Energy Agency, Naturally Occurring Radioactive Material (NORM VII): Proceedings of an International Symposium Beijing, China, 22-26 April 2013, STI/PUB/1664, ISBN 9789201040145 (January 2015) European Union Council Directive 2013/59/Euratom, http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2014:013:0001:0073:EN:PDF

World of Norm Collection 10 Books Box Set (Book 1-10) By The World of Norm Collection 10 Books Box Set (Book 1-10) By

Access-restricted-item true Addeddate 2018-12-12 23:42:06 Boxid IA1512322 Camera Sony Alpha-A6300 (Control) Collection_set china External-identifier It is a very funny book which will make everyone laugh. It is about a boy called Norman who lives with his mum and dad. Norman, his mum and dad had to move house. Norman thinks that they shoudn't have moved and is unhappy about the situation. His dad snores like a constipated rhinoceros. Life cannot get any unfairer for Norman. Will life ever get better for him? urn:lcp:worldofnormmayco0000mere:epub:5699639c-dbc5-4e03-84a6-baf2b08e4ae3 Foldoutcount 0 Identifier worldofnormmayco0000mere Identifier-ark ark:/13960/t14n6m19c Invoice 1213 Isbn 9781408313039

About Jonathan Meres

Granite, widely used as a cladding on city buildings and also architecturally in homes, contains an average of 3 ppm (40 Bq/kg) uranium and 17 ppm (70 Bq/kg) thorium. Radiation measurements on granite surfaces can show levels similar to those from low-grade uranium mine tailings. Table 8 shows some recorded activity concentrations for building materials. However some extreme values in excess of these have also been recorded. Earlier IAEA recommendations for the classification of exempt waste ( i.e. beneath low-level, and therefore not requiring any special facilities for disposal) are between 10 Bq/g and 1 MBq/g for 'moderate amounts'– depending on the radionuclide in question and the chances of public exposure ( Radiation Protection and Safety of Radiation Sources: International Basic Safety Standards, IAEA July 2014), however in practice categorization of waste is strongly determined by where the waste comes from. The largest producers of tantalum are Australia and Africa, most niobium comes from Brazil. Rare Earth Elements