Geologist and Geotechnical

Wellsite Geologist:- Description of core & cutting sample from drilling activities.- Analyze and determine coal elevation, thickness from geophysic logging data (gama ray, caliper & density).- Sampling Litology from core sample to analysis quality, geotechnical test & mine acid drainage.- Make corelation of distribution coal seam from drillhole data (core sample, geophysic logging and characteristic of quality).Geologist:- Make drill plan of area potential resources such as borhole quantity, type (open hole, coring, touch core), hole spacing, (determined from complexity condition geological are) predict of thickness, elevation and quality of coal seam.- validate drilling data as input data to make geological model.- Make geological model from drilling data (descriprion core/cutting sampel, geophysical logging and characteristic quality).- Condut inpit mapping (vertical thickness, structure geology ert) sampling & control quality from Pit to Port (crushing). - Update geological model quarterly from mapping data (channel sampling, vertical thickness , structure geology & sedimentary structure mapping , also from addtional drilling data.- Provide pit progress reconciliation: monthly, quartely progress mining of coal and OB as comparison to actual data survey (recovery).- Provide pit complete reconciliation (mine out area): determine misclose/factors variance of geological model reserve compare to actual mining from survey data.- Support calculate resource estimation annual and feasibility study all are Arutmin.Geotechnical Engineer :- Analysis slope stability of open pit and disposal (inpit dump & out of pit dump) design. - Monitoring slope stability Open Pit and disposal used peg monitoring survey, extensometer, inclino (opt) and radar SSR. - Mapping Geotech/ scanline mapping in Pit active and disposal area about failure indication or structure geology. - Supervision of Geotechnical drilling activities such full coring drilling, SPT and CPT.

Mapping Geology, Measure Stratigraphic Unit (Measured Section), Paleontology analysis, Petrography Analysis and Seismic Interpretation.