Log bench elevations for blast pattern accuracy, verify haul road grades against MSHA limits, document tailings facility grades, and generate as-built records for regulatory compliance and mine closure — for open pit mines in the US and internationally.
MSHA regulations limit haul road grades — typically 10% maximum. Non-compliant grades create safety violations, work stoppages, and accident liability. Manual grade checks with no documentation leave operations exposed to enforcement actions and citation.
Blast pattern drilling requires accurate bench floor elevations. Elevation drift from design means incorrect drilling depths, inconsistent fragmentation, and wasted drill time. Without systematic documentation, deviation is often discovered after the blast rather than before.
Mine closure requires certified as-built documentation of tailings facility grades, crest elevations, and slope measurements. Regulatory agencies will not release closure bonds without verified as-built records — paper-based systems make this nearly impossible to compile at closure.
Extreme heat, cold, dust, vibration, and altitude at remote mine sites degrade GPS and survey equipment accuracy. Without systematic calibration records, elevation data quality cannot be verified — and survey errors compound over time.
Log bench floor elevations across the blast pattern — verify against drill design elevations and track deviation. Multi-bench projects get organized by bench level and mining phase for clean records.
Station-based grade shots on haul roads with automatic MSHA-limit pass/fail flagging. Configurable grade limit (default 10%) with fail alerts for any road segment that exceeds specification. Export grade sheet for MSHA inspection response.
Log tailings impoundment crest elevations, freeboard measurements, embankment slope grades, and beach slope verification. Generate as-built records for tailings facility operational reviews and regulatory submissions.
Document diversion channel grades, sediment pond surface elevations, underdrain outlet elevations, and spillway grades. Verify positive drainage on all mine water management structures — required for stormwater permit compliance.
Log compaction tests on haul road construction and reclamation areas. Log nuclear gauge results with Proctor reference — required for MSHA haul road construction records and reclamation bond compliance.
Verify and document drainage grades on all reclaimed surfaces. IBC-referenced positive drainage calculations for reclamation slopes and diversion structures.
Capture coordinates with every bench shot, haul road point, and tailings check — KMZ export for mine site GIS and regulatory as-built submissions.
Log GPS rover and total station calibration checks — backsight verification, horizontal check, and elevation check — to maintain documentation of survey accuracy in harsh mining environments where equipment performance is difficult to verify.
Weather, crew, equipment on site, work performed, and safety observations — complete daily construction diary for MSHA and state mining regulatory compliance.
MSHA regulations under 30 CFR Part 56 and 77 require that haul road grades not exceed the braking capability of the vehicles using them. In practice, most mine operators limit haul roads to 10% grade (about 5.7 degrees). Specific limits depend on road conditions, vehicle type, and mine plan approvals. Some truck manufacturers permit steeper grades under specific conditions. Sitemark flags shots that exceed your configured grade limit.
Bench floor elevation accuracy for blast pattern drilling depends on the blast design parameters — subdrill depth, bench height, and rock mass characteristics. Most operations require bench floor elevations within ±0.3 feet (±100mm) of design to avoid incorrect drill depths. For precision blasting near infrastructure or in final wall areas, tolerance is tighter — typically ±0.1 ft. Sitemark allows configurable tolerance limits for bench elevation pass/fail.
Sitemark logs tailings facility crest elevations, freeboard measurements, embankment slope grades, and beach slope verification during operational reviews. These records form the documented inspection trail required by facility operating licenses and tailings management plans. At closure, Sitemark generates the as-built summary of final tailings facility grades for regulatory submission and bond release.
Mine closure requires proving that all earthwork has been returned to approved grades, drainage is positive and functional, and erosion control measures are in place. Sitemark generates a final as-built of all graded surfaces, drainage channels, and reclamation areas — organized by area and exportable for submission to the regulatory agency.
At high-altitude mine sites in the Andes, Australian Outback, or West African dry season, GPS equipment performance can degrade due to temperature extremes, dust ingress, and vibration. Sitemark's calibration log feature captures daily backsight checks and elevation verification shots — providing a documented record of survey equipment performance over time. If accuracy degrades, the calibration record shows when and where, rather than allowing errors to propagate undetected.
Sitemark is primarily designed for surface construction and site documentation. For underground mine surveys (heading grades, drift elevation, etc.), the core logging features work but GPS location capture will not function underground. Grade shot and reporting features are fully functional using manual station input.
Sitemark is used on mining construction projects in the US, Chile (copper and lithium — Atacama Region), Peru (copper — Apurímac and Cusco regions), Australia (iron ore, coal, and gold — Pilbara, Bowen Basin, Kalgoorlie), and West Africa (gold — Ghana, Mali, Burkina Faso). International projects applying MSHA-equivalent safety standards or ISO documentation frameworks use Sitemark documentation in English.
MSHA does not specify a compaction percentage for haul roads by number — instead they require roads to be of adequate strength for the vehicles using them. In practice, most mine operators use 90–95% Standard Proctor for haul road subgrade and 95% for base course. Sitemark logs compaction to whatever standard your operation specifies.
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