New: zaplaAll contenthive-129948hive-196917krzzansteemhive-183959hive-180932photographyhive-150122hive-185836uncommonlabhive-166405lifehive-183397hive-144064bitcoinhive-188619hive-139150krsuccesshive-101145hive-180301hive-103599hive-124908hive-120861hive-184714TrendingNewHotLikerscut777 (40)in busy • 6 years agoDrill hole location and collar surveyingDespite the introduction of sophisticated surveying techniques such as satellite guided global positioning, the seemingly simple task of providing the coordinates and elevation of the drill hole…