recomine alliance: NIRUBIS sub-project
In the period from 05.09. to 15.09.2022, Geccotec GmbH carried out soundings with the MPT probe newly developed as part of the NIRUBIS project at ZEE’s Spülhalde 1 in Ehrenfriedersdorf. The MPT probe is coupled with a CPT tip and uses X-ray fluorescence to measure concentrations of metals and elements in situ and in real time. The CPT probe also provides geotechnical data to characterize the tailings material. The campaign was very successful, 40 soundings with a total of approx. 455 sounding meters were carried out. Tin and arsenic were measured in varying and locally very different concentrations within the tailings. To calibrate the data, depth-differentiated liner samples were taken at relevant locations on the basis of the measurement results, which were analyzed for their metal content by the project partner ERZLABOR Advanced Solutions GmbH. After fine calibration of the measurement data, a statistically based calculation of the tin and arsenic contents is carried out by the project partner GLU. The following graphics and photos give an impression of the measured data and the work carried out on the dump. We would like to thank geotechnik heilgenstadt GmbH for their commitment and for providing the CPT sounding technology and KC MEDIA HOUSE for the photographic documentation.