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Exhibit "B" to <br />Exploration and Prospect Drilling Agreement <br />Las Animas County, Colorado <br />Permitted Exploration Activities <br />The following may occur on the subject Property as necessary activities to survey, explore for, <br />and define the extent and quality of all coal underlying the subject Lands: <br />• Vehicle access on existing roads, and pedestrian or ATV access to survey sites <br />• Cultural resource investigations (pedestrian surveys, shallow surface excavations to <br />identify/evaluate cultural resources that may be present, temporary staking of cultural <br />resource sites and resources, and photo-documentation). All such activities shall require <br />the prior written approval of LICENSOR. <br />• Threatened and Endangered Species and related wildlife evaluations (pedestrian surveys <br />and field observations to assess the presence, characteristics, and use patterns of <br />species and related habitats). All such activities shall require the prior written approval of <br />LICENSOR. <br />• Riparian and Wetland surveys (pedestrian surveys of riparian and potential wetland areas, <br />shallow surface excavation of soil pits to identify/evaluate hydric soils and ground water <br />levels, clipping of vegetation to evaluate vegetation types, cover, and productivity) <br />• Field surveying to locate both natural features and proposed surface facilities (roads, drill <br />pads, etc. - would involve establishment of one or more survey control stations, <br />pedestrian or ATV access to survey points, the use of mobile survey equipment, and <br />temporary or permanent placement of survey markers (ie: stakes and locator posts). <br />• Vibra-Sonic seismic investigations (involve temporary placement of geophones and cables <br />on the ground surface, movement of a low-ground pressure rubber-tired vibratory unit <br />across the lands with vibration of the ground at selected locations using a hydraulic <br />"thumper", and reception of reflected vibrations by a monitoring vehicle connected to the <br />geophone array) <br />• Improvement or modification of existing roads, or with prior written consent of LICENSOR <br />construction of new road segments to access drill pad locations <br />(improvements/modifications could include widening, grading, placement of gravel or other <br />suitable surfacing materials, and/or establishment of drainage control features). New road <br />construction would be minimized to the extent reasonably feasible and will be located with <br />the concurrence of Licensor. <br />• Subject to paragraph 3 of the Exploration and Prospect Drilling Agreement, construction of <br />drill pads for completion of overburden and coal drilling and coring (involves establishment <br />of appropriate site drainage controls (silt-fence or straw "wattles", soil material removal <br />and stockpiling, site grading and excavation of pits to contain drilling fluids, and site <br />fencing (where appropriate) to prevent livestock access. <br />• Subject to paragraph 3 of the Exploration and Prospect Drilling Agreement, core drilling, <br />sampling, and geophysical logging (involve location and set-up of drill-rig and required <br />supplies on the prepared drill pad, drilling through overburden and coal units, recovery of <br />core and/or chip samples, and use of a portable geophysical logging vehicle to log the <br />corehole on completion). Any fluids or additives used in drilling operations will be non-toxic <br />and drilling fluids are used to cool the drill bit and flush the cuttings from the hole during