Abstract
The determination of actual REPM use followed a twofold approach: first, a primary data analysis was initiated by measuring magnets in HDDs, mobile phones and earphones and second, a literature analysis has been done based on company annual reports, consultant and market research institutes to get annual production numbers. Then the primary data sets for HDDs and mobile phones have been offset with the annual production data to get verifiable quantitative data. For the wind turbine and electro-mobility field all data had to be assembled via literature research, company annual reports, consultant and market research reports. Details of the methods and data used are discussed in the respective chapters.
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Notes
- 1.
Following percentages have been reported by Western Digital and used analogue for the other manufacturers: 2005-2 %, 2006-7 %, 2007-13 %, 2008-28 %, 2009–2010-28 % were assumed as no reported data was available. The average weight: 2.5 g per 2.5″ HDD.
- 2.
The need for REE like Ce for the glass of the displays or Eu or Tb for the LEDs is not considered herein.
- 3.
REE based PMG is abbreviated REPMG as the wording DD-system or PMG alone could cause misunderstandings.
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Zepf, V. (2013). Scales and Relations: Analysis of REPM Use with Emphasis on the Years from 2000 to 2010. In: Rare Earth Elements. Springer Theses. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35458-8_6
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