By Roy Merritt
This is often a huge examine coal exploration and mining world wide, with discussions at the parameters and decision-making components in drilling and processing coal.
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Extra info for Coal Exploration, Mine Planning and Development
60_ 1'-<>--; ~4S1~. ~~ , •. ,........ , ;--;,. ~ ~2-' Upper Cretac«»'U '0 '0' to.... til~ and "mi· Anthracite anthraciu f--20~ PU~D. Eocea. octn. 0.... - ~I'l'io= ~ 0-----1. • ~lU 10--130--< ~iiH TriaooJe ~~ ~ ~~ ISO--< ~ . -.. - Prnuian 14 14 U UP..... a 1'--'" 1 . 0..... ~" ........... ,- if--l>4-- .. •.. ---. ~ 1 ~ 1 _lie- Figure 2-2. Distribution of coal by age and rank in the better-known coal fields of the world (from Cady, 1978). The index numbers referring to coal districts are grouped by continent and country in the following list: Africa/ Belgian Congo, 144; Natal, 147.
Most projects include at least basic expenditures for drilling, logging, and personnel (Table 3-4). Pre-exploration drilling plans that outline a proposed field program can be drawn up to facilitate scheduling, organization, and followthrough once on site (Table 3-5). Among the problems encountered in preparing a time-exploration budget are estimating completion dates, data interpretation, and planning phase activities. Staff supervision, communication, and documentation are important aspects of a typical exploration budget.
00 4 C. Mileage . . . • . . . . . . . . . . . . . . . . . . 00 D. 00 III. Geologist A. •...... 00 B. 00 C. Expenses . . . . . . • . . . . . . . . . . . . . . 00 D. 00 lIncludes casing, packers, caps, connectors, core boxes, plastic tubing for samples, etc. 2Includes unanticipated extra costs as for scoria drilling; delays due to drilling through hard rock bands; drill bits, soap, and water costs; drilling or coring in excess of predicted intervals. 3Includes natural gamma, caliper, resistivity, and density.