PTBA Internship Report · internship-4-5b
Calorific-value relationships — Seam C
For Seam C, the source gives ash of approximately 3.03–7.29% and sulfur of 0.38–1.39%. The spread is geologically meaningful because it may reflect parting abundance, mineral matter, sulfur mode or sampling support, yet the scatter plot alone cannot choose among those explanations.
SOURCE-LED TECHNICAL READING
Geological interpretation and evidential boundary
For Seam C, the source gives ash of approximately 3.03–7.29% and sulfur of 0.38–1.39%. The spread is geologically meaningful because it may reflect parting abundance, mineral matter, sulfur mode or sampling support, yet the scatter plot alone cannot choose among those explanations. The proposed environmental reading remains a working hypothesis until maceral, mineralogical, sulfur-form and stratigraphic-position data converge.
- Source
- Private internship source vault · Chapter IV record
- Location in source
- 4.3.5 Seam C
- Image quality
- Source scan
- Record ID
- internship-4-5b
