Stock Photo - An employee watches drillings for economically strategic raw materials on the Tiefenbach dump in Altenberg, Germany, 16 April 2014, on behalf of the Helmholtz Institute Freiberg for Resource Technology (HIF) at the Helmholtz Center Dresden-Rossendorf and the Technical University Mining Academy Freiberg. Old mining dumps can be an important source of raw materials. They still contain high amounts of recyclable materials, which could not be won earlier or were of no interest to the industry. Photo: Arno Burgi/dpa | usage worldwide. - Altenberg/Saxony/Germany

@ 0.073 --> Keywords launching task... @ 0.073 --> GetKeywords: Getting cache @ 0.094 --> _srcset calculated @ 0.118 --> GetKeywords: Request cached? True @ 0.161 --> begin dades json... @ 0.168 --> begin waiting GetItemsAsync... @ 0.185 --> GetKeywords: File obtained @ 0.185 --> GetKeywords: File to Json @ 0.186 --> GetKeywords: DocLastUpdate checked @ 0.186 --> GetKeywords: Cached item @ 0.187 --> GetKeywords: keywords ampliacion @ 0.220 --> itemsController.Get() completed! @ 0.251 --> pricing done @ 0.251 --> Dades JSON completed! @ 0.252 --> Keywords task start waiting @ 0.252 --> Keywords task completed @ 0.261 --> Schema completed @ 0.261 --> Adobe ads... @ 0.261 --> Adobe ads done @ 0.261 --> controller done