Assuring Coal Quality from the Seam to the Stockpile
Accurate coal sampling is the foundation of reliable quality assurance, blending optimization, and commercial fairness. Because coal quality varies naturally, representative sampling ensures analytical results truly reflect the lot’s grade and characteristics. Poor sampling introduces major valuation errors and undermines plant performance.
BQCIS provides independent mine-site sampling aligned with ASTM D7430 and ISO 13909 standards. Our inspectors oversee mechanical and manual sampling at stockpiles, conveyors, truck transfers, and loading points to ensure unbiased data collection.
Every sample is prepared and sealed under controlled conditions to prevent moisture loss or contamination. This verified data supports grade control, blending management, and transparent commercial settlement between buyers and producers.
Key Mine Quality Assurance Activities
Key Benefits of Mine Sampling & Inspection
Reliable Coal Quality Certification
Independent verification ensures coal shipments are sampled, analyzed, and certified without bias or dispute.
Standardized Protocol Compliance
Sampling executed to ISO and ASTM standards provides legally defensible and internationally accepted results.
Improved Operational Efficiency
On-site monitoring with rapid results allows timely process adjustments and reduces rework and demurrage costs.
Trust Between Buyer and Producer
Neutral BQCIS inspection builds transparency and confidence, minimizing contract disputes and commercial losses.
Success Story
Independent Sampling Resolves Quality Dispute at Mine Site
A coal producer faced a dispute with a utility buyer regarding ash content that threatened shipment penalties and contract suspension.
BQCIS was engaged as an independent umpire. We audited and supervised sampling per ISO 13909, verifying mechanical sampler calibration and cross-checking laboratory results under ISO/IEC 17025 protocols.
The joint inspection confirmed compliant ash levels and revealed bias in the buyer’s previous procedure. The BQCIS report was accepted by both parties, clearing the shipment and restoring confidence in the mine’s QA process.