This group includes mining engineers not elsewhere classified, for example those who perform tasks similar to those of Mining engineer, general (0-27.10) but specialise in mining or quarrying solid minerals (other than coal and metallic minerals) such as stone, marble, clay, salt, gravel or diamonds; extracting subsurface water or sulphur and other solid minerals by drilling boreholes; or extracting tin, gold, diamonds or other solid minerals from alluvial deposits by sluicing and dredging.