Alluvial Prospecting and Mining by S. V. Griffith

By S. V. Griffith

Alluvial Prospecting and Mining (Second Revised variation) specializes in the emergence of better mining suggestions and strategies utilized in the excavation of alluvial deposits.

The booklet first deals details at the prospecting equipment, sampling, and valuation. Discussions specialize in initial systematic prospecting, drilling in tough floor, supervision of drilling, cost of excavation, pitting and drilling in comparison, sampling of bore holes, and calculation of reserves. The e-book then examines water provide, together with earth dams, spillways, leats, ditches, or canals, and layout of pipelines.

The manuscript ponders on sluicing and dry focus of minerals. themes comprise rock pavements, undercurrents, fake bottoms, glean up, tailings, flooring sluicing, water required, exploitation of crops, electrostatic separation, and excessive depth magnetic separators. The ebook additionally experiences ahead guidance of overburden, hydraulic mining, and gravel pumping.

The ebook is a accountable reference for miners and readers attracted to alluvial prospecting and mining.

Show description

Read Online or Download Alluvial Prospecting and Mining PDF

Similar mining books

Mitigation of metal mining influenced water

Mitigation of steel Mining stimulated Water is the ''how to mend it'' quantity in a sequence of six handbooks on applied sciences for coping with steel mine and metallurgical strategy prompted water. not like different texts that attention solely on acid drainage from coal mines, this entire sequence examines either acidic and impartial pH waters from steel mining and metallurgical strategies which can effect the surroundings.

Pressure and Temperature Well Testing

The publication contains components: strain and move good checking out (Part I) and Temperature good checking out (Part II), and comprises various authors’ advancements. as a result of similarity in Darcy’s and Fourier’s legislation an identical differential diffusivity equation describes the temporary stream of incompressible fluid in porous medium and warmth conduction in solids.

Covariance Analysis for Seismic Signal Processing

This quantity is meant to provide the geophysical sign analyst adequate fabric to appreciate the usefulness of knowledge covariance matrix research within the processing of geophysical indications. A heritage of uncomplicated linear algebra, statistics, and basic random sign research is thought. This reference is exclusive in that the information vector covariance matrix is used all through.

Extra info for Alluvial Prospecting and Mining

Example text

All details are then entered up in the data sheet (see Fig. 31). Sampling of pits. Pits are sampled by: (a) making a cut from surface into bedrock, in the side of each pit, and panning the resulting material. (b) stacking all the spoil excavated from each pit, in a cone, and quartering in the usual way, until the bulk has been reduced to a small sample, suitable for panning, and (c) washing the entire material excavated from each pit, using rockers, long toms, sluice boxes, etc. At the very outset, the author makes the statement that the only accurate and satisfactory method, is that given under (c), that is, washing the entire contents of the pit; his contention is, why sink a pit and take a cut sample, when just as accurate a sample could be obtained by drilling a bore hole.

Ft. 01241 Therefore, every foot of casing will contain ——— cu. yd = 0Ό04596 cu. yd, or 217 lineal feet of casing will be equivalent to one cubic yard of material. The author does not agree with the system of basing all calculations on the internal diameter of the shoe; the cutting edge of the casing shoe is bevelled on the inside, and it is justifiable to assume that all the material cut by the bevelled edge will be pushed inwards to become an integral part of the sample. Moreover, the diameter of the bore hole is theoretically equal to the outside diameter of the casing shoe, and as all the cuttings go to form the sample, the external measure­ ment is the obvious one to employ.

Long, divided into tenths, will represent tenths of a £ cu. ft (see Fig. 33); the reading registered on the calibrated rod, subtracted from 10, gives the volume of the clayey material in the box. The slime squeezed from the clayey material, together with the wash water used to wash the inside and outside of the pump or auger, is put into a draining bag, and left overnight to drain; when free of excess water, it is introduced into the water displacement box, allowed to settle, and then measured-as already described.

Download PDF sample

Rated 4.23 of 5 – based on 33 votes