New Detectors Allow Search for Lightweight Dark Matter Particles

The central part of all CRESST detectors is a crystal of calcium tungstate. When a particle hits one of the three crystal atoms (calcium, tungsten, and oxygen), the detectors simultaneously measure energy and light signals from the collision that deliver information about the nature of the impinging particle.
 
In order to catch even the smallest possible temperature and light signals, the detector modules are cooled to near absolute zero (-273.15 degrees C). To eliminate disturbing background events, the CRESST scientists employ - for one thing - materials with little natural radioactivity. In addition, the experiment stands in the world's largest underground laboratory, in the Italian mountain Gran Sasso, and thus is largely shielded from cosmic rays.
 
The Earth, planets, stars, and galaxies form only the visible portion of the matter in the universe. Greater by far is the share accounted for by invisible "dark matter". Scientists have searched for the particles of dark matter in numerous experiments - so far, in vain. With the CRESST experiment, now the search radius can be considerably expanded: The CRESST detectors are being overhauled and are then able to detect particles whose mass lies below the current measurement range. As a consequence, the chance of tracking dark matter down goes up.
 
Theoretical models and astrophysical observations leave hardly any doubt that dark matter exists: Its share is five times more than all visible material. "So far a likely candidate for the dark matter particle was thought to be a heavy particle, the so-called WIMP," explains Dr. Federica Petricca, a researcher at the Max Planck Institute for Physics and spokesperson of the CRESST experiment (Cryogenic Rare Event Search with Superconducting Thermometers). "Most current experiments therefore probe a measurement range between 10 and 1000 GeV/c^2."
 
The current lower limit of 10 GeV/c^2 (GeV: gigaelectronvolt; c: speed of light) roughly corresponds to the mass of a carbon atom. However, recently various new theoretical models have been developed with the potential of solving long-standing problems, like the difference between the simulated and the observed dark matter profile in galaxies. Several of theses models hint towards dark matter candidates below the mass of the traditional WIMP.

 

Wolf Minerals' Boss Confident of Tungsten Price Rebound

Wolf Minerals’ boss expects more casualties among rival tungsten producers unless the price of the heavy metal improves substantially, he told investors today.
A number of private tungsten mines in China have shut, while another big tungsten mine in Canada, Cantung, run by North American Tungsten, was closed last month.
China remains the main source of tungsten production globally but state-owned enterprises are cutting back.
The tungsten price needs to recover to at least US$30,000 per tonne from around US$17,000 currently for these producers to remain profitable warned Russell Clark, though he’s not concerned.
Wolf only opened the Drakelands mine, a £140 mln tungsten mine on the fringes of Dartmoor, Devon, in September, but he remains confident on the project’s future.
“Everyone is hurting at these prices,” he said, “but we remain comfortable that they are not sustainable.”
“The silver lining,” he said, “is that while the price is what it is, you won’t see any more mines or projects coming online.”
Clark reckons the price will rebound, as demand remains strong and supply is slowing down, but he’s not resting on his laurels.
He said Wolf will continue to cut costs where possible once the ramp-up phase of the mine has been completed and until the market come out of “the doldrums”.
When the company first commissioned the project the tungsten price was around US$35,000, per tonne.
Shares were 3.5% higher to almost 13p.

 

W Resources Now Fine-Tuning Plans for Tungsten Production

tungsten wiretungsten wire

W Resources is now closing in on a final investment decision for the La Parrilla tungsten project in Spain
Michael Masterman has once again put his money where his mouth is by investing significant money into the company he chairs, W Resources (LON:WRES).

Read more...

W Resources Shares up as it Reports "Significant" Régua Resource Upgrade

W Resources shares pushed higher as it unveiled a significant increase in resources at the Régua project in northern Portugal.

W Resources (LON:WRES) shares pushed higher as it unveiled a "significant" increase in resources at the Régua project in northern Portugal.

Notably, the higher confidence indicated resources now stand at 3.76 million tonnes at 0.304% tungsten trioxide - a 76% increase on the previous figure of 2.14 million tonnes at  0.367% WO3 from three years ago.

The total resource tonnage increased by 22% to 5.46 million tonnes at a grade of 0.28% tungsten, up from 4.46 million tonnes.

The group's chairman Michael Masterman told  investors: "The drilling campaign at Régua exceeded our initial expectations and we are delighted that the work to date has resulted in this significant increase in the indicated resources at Régua.

"The results to date provide us with a strong basis for the next phase of mine planning as we move the project nearer to production.

"The next step is now to complete the mine planning and reserve estimation process, which is targeted for the first quarter 2016.

"Metallurgical work has progressed well over the last quarter with good metal recoveries.  A full update on the metallurgical programme and results will be provided in the next two months."

The latest resource is based on thick, high grade sections of tungsten at or near surface.

In August this year, the firm  said it was considering a shallow open pit mine design in a first phase with the second phase to be a larger scale high grade underground operation. 

W Resources shares added 3.17% in early deals to 0.65p

 

Commodity Index of Ammonium Paratungstate is 34.26 on November 12

Commodity Index of Ammonium Paratungstate is 34.26 on November 12, 0.78 lower than yesterday, which make a historical new low record in cycle, compared with the highest point of 100.00 points on September 1, 2011 decreased by 65.74%.

Commodity Index

Date

08-14

08-23

09-01

09-10

09-19

09-28

10-07

10-16

10-25

11-03

11-12

Commodity Index

45.04

44.89

43.40

43.15

42.81

42.30

42.30

38.98

38.30

37.02

34.26

 

The Tungsten Lifecycle Chart

Our all-purpose Lifecycle chart serves particularly well, in the case of Tungsten, to show the state of progress of the various players vis-à-vis each other on the exploration-production continuum (not that some players, irrespective of which metal, imagine themselves production-bound).

This chart raises the interesting question of how to deal with juniors. During the years of the Supercycle any junior in a given metal could be seen as a potential player. As it wended its way through the Resource/PEA/PFS/BFS continuum there was always an assumption that financing would be forthcoming by hook or by crook for a worthy project. That is now not the case. So do we position a no-hope junior on the Lifecycle Chart at all or just cast them into the outer darkness?

The second issue relates to “naming names” because it is not particularly a company that it somewhere on the timeline but rather individual projects. A good example is Almonty, which has a producing mine in Spain, a near producing mine in Australia and a more distant prospect in South Korea. The stricken North American Tungsten has a producing mine in the Yukon and a project that is way at the other end of the lifecycle and likely to stay there because of its owner's travails.



Looking back at the Lifecycle Chart (below) we published in 2011, the companies at the very right were Malaga and North American Tungsten, now both in administration or bankruptcy, and Malaga's property is in the hands of new owners.

Geodex sold its project to Northcliff. Largo mothballed its Brazilian mine almost as soon as it got into operation. Woulfe was bought by Almonty and the “other” Wolf has advanced mightily. King Island Scheelite had a management and project reconfiguration (for the better) but that has put it no further ahead of where it was. Colt has oscillated around trying to decide if it will be a Tungsten project or a gold venture. Almonty did not even figure on our radar screen!

 

Tungsten Supply

tungsten alloy rodtungsten alloy gundong
Over the last few years, sources of supply have shifted totally. In 1986, the USSR was the world's largest consumer but, by 1992, the reformed CIS was exporting tungsten and by 1996 was the world's second largest supplier. 

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Wolf Minerals focused on full production at Hemerdon

Wolf Minerals’ (LON:WLFE) Hemerdon mine may soon be the largest tungsten producer outside of China and Russia, according to broker SP Angel.
 
Hemerdon only started production last month, but the current top Western producer, Cantung in Canada, is in the equivalent of administration and being wound down.
 
Cantung is victim of a slide in the price of tungsten that has seen the average price fall by US$154/mtu to US$206/Mtu since work commenced on Hemerdon in March 2014.
 
Wolf said today that this has resulted in some supply being withdrawn from the market with some producers shutting down and lower overall trading volumes than in previous years.
 
SP Angel suggested this referred to the closure of Cantung and when when this occurs, Hemerdon is likely to be the largest tungsten mine outside Russia and China.
 
Wolf added that new supply from projects outside of China is expected to be limited for the next few years, which may result in a tighter supply scenario.
 
The miner confirmed today that Hemerdon, near Plymouth in Devon, is running for seven days a week on a trial basis.
 
The emphasis in the current quarter will be to build up to full production and optimise the plant’s performance, through a shift to permanent seven day working if this is approved.
 
Russell Clark, Wolf's managing director, said: “The company has now realised its ambition of becoming a tungsten producer and we expect to provide a reliable, high quality supply of concentrate to our customers for many years into the future."
 
At full tilt, Hemerdon will produce more than 4,500 tonnes of WO3 (tungsten) in concentrate per year.
 
Shares edged up to 14.5p. 


Tungsten Oxide, Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

 

Northland Capital Partners View on the City Mariana Resources, W Resources, Altona Energy and Alexander Mining

NORTHLAND CAPITAL PARTNERS VIEW: Régua is expected to be the second project that W Resources moves to production. While it is smaller in terms of tonnage at present compared to the Company’s flagship La Parrilla development project, it is also much higher grade (Chart 1). The updated mineral resource estimate has seen W Resources increase both the volume of contained tungsten within the Total mineral resource estimate, as well as increasing the size of the Indicated category. While the grade has decreased it is still at the higher end of comparable open pit projects (Chart 1). This updated mineral resource estimate is expected to form the basis of mine planning and the reserve estimation due for completion in Q116 as the Company looks to move Régua toward production. 


Tungsten Oxide, Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

 

GULFPORT, Mississippi — A Pennsylvania company is buying a Gulfport facility to expand.

Towanda Metadyne said Monday it had bought the former Hydro Carbide facility in Gulfport to expand manufacture of tungsten carbide. The company says it will make tungsten carbide rods for cutting tools.

The company plans to hire 20 people, beginning work later this month. It won't say how much it spent.

The Mississippi Development Authority is giving the company $48,200 for parking lot paving, fencing, and employee pavilion construction. Harrison County is giving $4,800 to match.

MDA spokeswoman Tammy Craft says workers will make $12 to $20 an hour, and that Towanda Metadyne will offer jobs to some former Hydro Carbide workers.

Craft says the company will qualify for property tax exemptions, although their amount hasn't been determined yet.

 

Tungsten Oxide, Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

 

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