Pebble mine project

More recently, its proximity to mineral, animal and seafood riches provided an incentive for human habitation along its shoreline. Early Russian and English exploration provided most of the non-native influences of the area. During his voyage through the area inthe famed British navigator and explorer, Captain James Cook named the area "in honor of the Admiral Earl of Bristol " in England. Early settlement[ edit ] Shore of Bristol Bay After establishing some temporary settlements in the late s, The Russian American Company sent exploratory parties to document the coast and nearby inland areas of Bristol Bay.

Pebble mine project

Geography[ edit ] The Pebble prospect is in a remote, wild, and generally uninhabited part of the Bristol Bay watershed. The deposit area is characterized by relatively flat land dotted by glacial ponds, interspersed with isolated mountains or ranges of hills rising one or two thousand feet above the flats.

This part of the Kahiltna terrane is dominated by Late Triassic basaltandesite and sedimentary rocks overlain by Jurassic-Cretaceous andesitic turbidites. Cretaceous granitic intrusive activity was widespread in the Kahiltna terrane.

Tertiary volcanic and sedimentary rocks, and Quaternary glacial deposits, developed over the older rocks.

Pebble Project Environmental Protection Agency said in a report released on Wednesday. The EPA said a mine could destroy up to 94 miles of salmon-supporting streams and thousands of acres of wetlands, ponds and lakes.
Geography[ edit ] The Pebble prospect is in a remote, wild, and generally uninhabited part of the Bristol Bay watershed. The deposit area is characterized by relatively flat land dotted by glacial ponds, interspersed with isolated mountains or ranges of hills rising one or two thousand feet above the flats.
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Large Mine Permitting – Div. of Mining, Land, and Water Nine Bristol Bay tribes, commercial fishermen and sportsmen and many others request to U. This measure is authorized under the more than 40 year-old Clean Water Act.

The Lake Clark fault is a major right-lateral strike-slip crustal feature, considered to be a westward expression of the Castle Mountain fault.

The actual ground trace of the fault and its splays are unknown in the Pebble area, due to extensive ground cover. This zone was the source of the Good Friday earthquake of magnitude 9. Pebble holds mostly low-grade ore, requiring a large-scale operation to economically recover it.

The Pebble deposit is hosted in porphyritic granodiorite to tonalite of Upper Cretaceous age intruded into deformed sedimentary rocks of the Jurassic to Cretaceous Kahiltna flysch terrane.

In the western part of the orebody, mineralization occurs in a complex of several small granodiorite cupolasdiorite sillsolder intrusions, brecciasand sediments. The orebody extends eastward across a fault contact, at depth. East of the fault mineralization occurs in abundant sills and in the intruded sediments.

Farther east, and deeper, the sills coalesce into a deeply buried granodiorite pluton.

Mine Outlook

Mineralization and ore continue into the pluton. The eastern part of the deposit was eroded when it was exposed at the surface millions of years ago. It has since been buried by a thickening-to-the-east wedge of post-mineralization-age Tertiary sedimentary and volcanic sedimentary rocks.

Pebble mine project

In Februarya resource estimate, based on a total of drillholes and at a 0. Quantities of palladium and rhenium also occur in the deposit. Byproducts of silver, rhenium, and palladium metals would also be recovered. Fisheries[ edit ] Bristol Bay is home to the world's largest salmon run.

All five Eastern Pacific species spawn in the bay's freshwater tributaries. Commercial fisheries include the world's largest sockeye salmon fishery.

The Kvichak River has the single largest red salmon run in the world. Many lodges cater to sport fishermen exploiting the salmon and trout populations in the freshwater tributaries.REFILE-Anglo departure not the end of Alaska's Pebble mine, locals say; Anglo American withdraws from Pebble Mine, casting project's future into doubt.

The Kensington Gold Mine is an underground long hole stoping and drift-and-fill operation using flotation processes to recover gold.

Bristol Bay

The mine is located in southeast Alaska, in the Tongass National Forest between Berners Bay and Lynn Canal, approximately 45 . The Trump administration is reviving a controversial Obama administration proposal to block a massive gold mine proposed in Alaska after previously saying it would.

Buy AKDY 36" Wooden Style Wall Mount Tempered Glass Log Pebble 2-in-1 Electric Fireplace Heater Stove W Adjustable Temperature w/ Remote Control: Fireplace & Stove Accessories - ashio-midori.com FREE DELIVERY possible on eligible purchases. U.S. Army Corps of Engineers Begins Review of Pebble Mine Permit Application.

The U.S. Army Corps of Engineers (Corps) is reviewing a Clean Water Act permit application from the Pebble Limited Partnership and has started the Environmental Impact Statement (EIS) process under the .

Exploratory drilling at Pebble Mine first came about in , when Northern Dynasty Minerals, a small Canadian company, proposed the project on square miles of Alaska state land for which it.

Pebble Mine - Wikipedia