Callahan Mine Superfund Site - Superfund Records Collections

Callahan Mine Superfund Site Tailing Pile Remedial Action Design Refinement Feasibility Evaluation Problem Statement: A remedial design for the tailing impoundment at the Callahan Mine Superfund site was documented by AMEC in the OU3 Final Remedial Design Basis of Design

The Environmental Effects of Mine Wastes

The Environmental Effects of Mine Wastes David W. Blowes[1] 1. Waterloo Centre for Groundwater Research, University of Waterloo, Waterloo, Ontario ABSTRACT The oxidation in sulfide minerals in waste rock piles and mine tailings impoundments generates acidic waters containing high concentrations of SO 4, Fe(II) and other metals. The water ...

Spoil tip - Wikipedia

A spoil tip (also called a boney pile, gob pile or culm bank) is a pile built of accumulated spoil – the overburden or other waste rock removed during coal and ore mining. These waste materials are typically composed of shale, as well as smaller quantities of carboniferous sandstone and various other residues.

Hydraulic conductivity of homogenized tailings from hard ...

Tailings produced by milling for one extraction from hard rock mines, which range in size from clay to fine sand, have relatively low hydraulic conductivity, k. The value of k must be known with a certain degree of certainty to analyze consolidation and seepage conditions in and around tailings ponds. In this paper, the authors present the results of a laboratory investigation on hydraulic ...

Physical, mechanical, and hydraulic properties of coal ...

impoundment. The physical, mechanical, and hydraulic conductivity properties of CCR and FCR are critical in designing coal refuse disposal dams and impoundments for both static and seismic stability. This paper provides a summary of laboratory and in-situ strength, and hydraulic …

Amador County, California Mines - Western Mining History

County mine maps available to premium members About the MRDS Mines Database: All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should …

Vestiges of Amador—The Argonaut Tailings Dam Part II ...

This 1944 aerial photograph shows the layout of the three containment areas for the Argonaut Mine. The Eastwood Dam area can be seen on the far right with the "Old Tailings Pile" the largest, on the left, and the "Middle Tailings Pile" in between the two.

Geotechnical Properties of Mine Tailings - ASCE Library

(CRR) of the four tailings were found to be comparablewith previous report data onother metal tailings, and the consolidation stress showed little impact on CRR. The laboratory tests provided useful information to understand the geotechnical behaviors of mine tailings including seepage, deformation, strength, as well as seismic responses.

REPORT: CONCEPTUAL MODEL OF TAILINGS PILES

portion of these tailings pile is s largely dry (unsaturated ) Tailings piles 1 and 2 are representativ oef a class of tailings impoundments referre tdo as "upstream tailing damss" Davie ansd Martin (2000) describ e upstream tailings dams as those where the crest of the dam move isn a pond-ward direction relativ to thee initial

History of Idarado Mining Company Tailings Piles

History of Idarado Mining Company Tailings Piles Mining for gold, silver and other metals began in the Telluride area in 1875 and continued through 1978. Hundreds of mines and hundreds of miles of tunnels were constructed below ground and dozens of ore mills …

Cyanide Tailing Piles - Detector Prospector Forum ...

Feb 19, 2018· A mine dump may have some gold as Andyy suggests. Dredge tailings maybe have nuggets if the area they dredged was known for nuggets rather than fine gold. Most of the dredge piles in Montana are now sitting on private land because the original claims were patented. I am not sure where one could get access to dredge piles.

Man-Made Gold Indicators - How to Identify Past Mining ...

Aug 08, 2014· One of the types of historic mining that is easiest to identify is tailing piles left behind from dredging operations. I am not talking about a modern suction dredge; rather we are talking about the huge bucket-line dredges, drag-line dredges, and smaller "doodlebug" dredges that were so commonly used in the rich gold bearing areas mainly during the early to mid-1900s.

Prospecting Gold Tailing Piles with a Metal Detector

A metal detector can be one of the best ways to search for gold, and this is especially true for the old tailing piles that are found in the river bottoms of many gold districts. Nice gold nuggets are still found from time to time.

Wegner Quartz Crystal Mines - Dig Your Own Tailings Pile

The Tailings Area is a great affordable option for families and groups of all sizes and abilities. The tailings is a large open area where we bring truckloads of dirt and crystals that we blasted out of our mine pits and spread it out in a field. Come anytime before 2:00 and stay all day until 4:00 p.m..

1.1 PHASES OF A MINING PROJECT - Home | ELAW

1.1 PHASES OF A MINING PROJECT There are different phases of a mining project, ... Bulldozers, dredges, or hydraulic jets of water (a process called 'hydraulic mining') are used to extract the ore. Placer mining is ... of waste piles (often tailings) from inactive or abandoned mines, or older waste piles …

Lake Natomas Dredge Tailings- Mtbr.com

Dec 10, 2013· The hydraulic mining not only raised the bed of the Sacramento, it accreted throughout the entire Delta and SF estuary. ... I've always wondered if there's been any consideration to restore the tailing piles around where the dredges worked here in Folsom. Some areas, like the Mississippi Bar area, are wastelands. 12-10-2013 #29.

Effect Of Hydraulic Classification On Iron Ore Tailings

Oct 24, 2013 ... the iron sulphides (pyrite and pyrrhotite), produces rock mine drainage ... not limited to compressive strength, density, porosity, hydraulic conductivity ... the ore body in addition to providing a suitable and economical disposal of ..... (2007a) investigated the effect of binder on classified tailings …

Tailings - Wikipedia

Tailings, also called mine dumps, culm dumps, slimes, tails, refuse, leach residue, slickens, or terra-cone (terrikon), are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining ...

Gold mining an old tailings pile with a high banker - YouTube

Nov 07, 2011· Since the dredging season has frozen us out; we decided to give the tailings pile a dig. We setup high bankers, and started to shovel. Worked for about an hour, then panned to see how the recovery ...

Gin Lin Mining Trail | Rogue River Nat'l Forest | Oh, Ranger!

The extensive pile of cobbles before you, now grown over with trees and shrubs, once was part of an ancient river deposit located further up the slope. The cobbles were sorted from the gold-bearing smaller material and discarded as piles of "tailings". These tailings are the result of hydraulic mining. Look for other tailing piles along the trail.

Researching Evidence of Past Mining to Locate Gold Deposits

Gold can still be found in dredge tailing, hydraulic pits, lode mines, and drywasher waste piles. Understanding how past areas were mined by the early gold miners can help you decide which areas are most likely to produce gold today. Locating these areas can be a …

Randy at Cache Creek, Colorado -- 12 Jun 13: Sluicing Old ...

Jun 13, 2013· Spent about 5 hours sample panning & sluicing around at Cache Creek in the old cobble piles and tailings of the old hydraulic mining that ran from 1860 to …

Mine Tailings Disposal Methods

The methods commonly employed for disposal of these wastes in each of the industry segments (that is, coal mining and metal-ore and non-metal mineral mining) are described below. Mining Coal Tailings Disposal As has been pointed out earlier in this section, immense quantities of wastes are produced by coal mining activities.

Mine Tailings Dredges & Mine Tailing Dredging Equipment ...

Clear tailings ponds and direct feeling dewatering plants with mining tailings dredges and dredging equipment from IMS Dredges. IMS is the world's leading producer of one truck transportable dredging systems and has delivered more dredges for lake, marina, and canal projects than any other.

AN EMPIRICAL MODEL FOR PREDICTING HYDRAULIC …

from these tests are used to develop an empirical model for predicting the hydraulic conductivity of mine tailings under fully saturated conditions as a function of void ratio and fine contents. The formulated model is a useful tool to estimate the hydraulic conductivity of non-plastic fine tailings, a parameter needed in seepage

Tailings.info Hydraulic Mining of Tailings

Figure 2: Simplified diagram showing the hydraulic re-mining of tailings. It can be noted that the use of hydraulic mining for tailings can be to either reprocess the waste, mine the waste as a product, or for moving of the tailings to a more suitable location.

MORE ON TAILINGS - Nugget Shooter

MORE ON TAILINGS by W Southern Jr. - 2003. I have mentioned hunting for nuggets in tailing piles many times in various articles, but this time I will go into a bit more detail. There are several types of left over piles after mining operations ended in the various placer and hard rock mining districts across the southwest. Some from dry ...

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