First Tin PLC announced an updated Mineral Resource Estimate ("MRE") for its 100% owned Tellerhauser Tin Project in Germany, completed by independent geological consultants DMT Group ("DMT"). Confirmation Drilling: The primary aims were to confirm historic grades and upgrade parts of the inferred resource to the next higher category in accordance with the JORC Code (2012) by expanding the data base in the thick skarn seams. A total of 8 drill holes with a total length of 4,365.7 m were drilled from 3 drill sites (including three test holes from Pruy from collar SaxDRE036). All drilling, depth control and recovery was supervised by project geologists Drill sample recovery: Method of recording and assessing core and chip sample recoveries and results assessed.

The main items have all been captured in the digital database including the drill intervals, lithology, recovery and assay data. All core was destroyed with the cessation of the uranium mining. Confirmation: All diamond drill cores have been geologically logged and photographed (wet and dry) to a level of detail to support appropriate mineral estimation, mining, and metallurgical studies.

Thus, analysis method is assessed as appropriate to have produced reliable results on a level of confidence required for resource estimation; Results of Blanks for Sn demonstrate that a cross-contamination during sample preparation and analysis is not observed. Location of data points: Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. This project is resource status, not exploration status; Balanced reporting: Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results; This project is resource status, Not exploration status Other substantive exploration data: Other exploration data, if meaningful and material, should be reported including (but not limited to): geological observations; geophysical survey results; geochemical survey results; bulk samples - size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances.

In consequence, DMT assesses that all analysis results are accurate, precise and representative to be used for a resource update. The Main Skarn and Mineralized Schist was modelled continuously, while the Skarn lenses were modelled using the Pinch-out Tool. For the resource update of the Tellerhauser project area, it was decided to apply the Pinch-out Tool to all domains in order to avoid non-Skarn rocks in Skarn domain and non-mineralised schist in Mineralised Schist domain.

The process of validation, the checking process used, the comparison of model data to drill hole data, and use of reconciliation data if available. Resource block model was established with block size of X = 10 m, Y = 10 m, Z = 1 m. Exponential omnidirectional variogram model for data of Sn in Skarn show a range of 140 m, a nugget of 0.16 and a sill of 0.18 (orientation -10 degrees to SE). Exponential omnidirectional variable model for data of Sn in Mineralised Schist show a range of 140 m., a nugget of0.022 and a sill of 0.022 (orientation -10 degrees To SE).

In order to reduce smoothing effects, the interpolation was done in several passes with increasing sizes of the search ellipsoid, minimum number of composite samples coming from a minimum number of holes. Model validation shows good reproduction of primary data. The resource block model was validated to demonstrate that the applied methodology to model geology and grade has produced a model which is representative to primary data of holes and channels.

It is also expected that zinc will need to be removed by floatation to improve gravity recovery and zinc may be recovered as a by-product. Indium is expected to report to a copper sulphide concentrate that will be recoverable via flotation. Indicated Resources: All blocks within the wireframed constraints and 70 m maximum distance to nearest Sn sample and a minimum of nearest Sn sample and a minimum number of 3 composites from a minimum of 2 drill holes or channels.