com. Steven Kurtzman of Western Radiation Oncology is
pioneering the introduction of the new seed therapy.

proficiency increases

FREMONT, Calif. Demonstrating continued support for
the proprietary, technology designed to deliver non-radioactive, isotope-free
radiation treatment in virtually any clinical setting, the investment will
allow Xoft to complete clinical validation studies on the Axxent(TM)
Electronic Brachytherapy system and launch it in the multi-billion dollar
breast cancer therapeutics market.A.

--- -IsoRay Medical:

-- First seed implant in Bay Area -- marking the introduction of
the Cesium-131 treatment option for local prostate cancer
patients.

technologists uic

"Electronic Brachytherapy holds significant promise to help breast
surgeons and radiation oncologists work together to provide the best possible
therapy with the greatest clinical outcomes," said Darius Francescatti , MD,
assistant professor, Rush University Medical Center in Chicago.

-- The new treatment option enables patients to return to normal
activities sooner than other treatment options .
B-roll will be available at that time.

radioactive mitigation

Xoft is developing leading-edge new technologies for the practice of
radiation oncology through Electronic Brachytherapy, which utilizes
proprietary miniaturized x-ray tube technology."

Mr. These
statements include, but are not limited to , financial projections and
estimates and their underlying assumptions; statements regarding plans ,
objectives and expectations with respect to future operations, products and
services; and statements regarding future performance. Such statements are
subject to certain risks and uncertainties, many of which are difficult to
predict and generally beyond the control of Tonogold Resources, Inc.

increases 238

With Xoft's electronic
brachytherapy technology, users can control energy level and total dose ,
allowing more flexibility than isotope-based systems -- but in a non-shielded
or lightly shielded clinical environment. Strachan will oversee the technical
aspects of the Company's exploration activities .S. He is also a qualified person for purposes of Rule
43-101. Wilson on the Board of Directors, who
resigned from the Board effective this week.

radioactive technologists

"

About Xoft, Inc. Tonogold will continue to
benefit from Don's expertise. Janda continued, "Don Strachan was instrumental in choosing the Nyac
property from dozens of prospects and has developed that property into the
central asset of our company. Dr.

radioactivity intruder

Designed to deliver electronically generated ionizing radiation
directly to tumor beds, this localized approach minimizes exposure of the
patient's healthy tissue to toxic radiation . From 1984 to 1986, he worked for St.
degree in Geology from New Mexico Institute of Mining and Technology.

Tonogold's President, Jeffrey Janda, commented: "Don Strachan is a highly
experienced geologist with a track record of finding and expanding
deposits.

proves uic

This solution provides a therapeutic dose of intracavitary
radiation directly to the region at risk without the complex handling and
resource logistics necessary when performing brachytherapy using radioactive
isotopes. Strachan
has worked as an independent geologist primarily evaluating gold and silver
properties.

-- Dr.

risks mitigation

The round also included two new investors, Maverick Capital and
RiverVest Venture Partners. "We're pleased that the
promise of this breakthrough technology continues to be recognized and
rewarded by strong support from the investment community, as well as leading
radiation oncologists and breast surgeons . The Axxent Electronic
Brachytherapy System, Xoft's first treatment system, is designed for use in
Accelerated Partial Breast Irradiation (APBI) for the treatment of early-stage
breast cancer.

Mr. From 1976 to 1983, he worked for Houston Oil and
Minerals as an exploration geologist and worked in uranium, base metals,
gold, and silver in the western United States. Wilson is no longer
affiliated with the Company in any capacity.

proves contributes

Tonogold Resources, Inc.
Strachan is a Certified Professional Geologist and member of the Geological
Society of Nevada, the Geologic Association of Canada, and the Society of
Economic Geologists.

decay risks

, a company developing
electronic brachytherapy for cancer treatment, has closed a commercialization
round of financing, raising $30 million.

Business Editors/Health/Medical Writers
REMINDER.

-- When placed inside or near a tumor, Cesium -131 seeds deliver
radiation directly to cancer cells while reducing or
eliminating damage to surrounding tissue. Mills
Health Center and several other local Bay Area centers will be
introducing the Cesium-131 option -- representing the first
major advancement in LDR seed brachytherapy in more than 18
years.

Tuesday, May 24, 1:30 p.

radioactive radiation

Strachan holds a B. Strachan is supervising Tonogold's geochemical exploration
program at the Nyac, Alaska gold project.

REMINDER/Bay Area Physician Introduces Promising New Prostate Cancer Treatment; Cesium -131 from IsoRay Medical First FDA-Approved Advancement in Seed Therapy i

radioactivity aarst

As a result, tens of thousands of patients will have greater access to
therapy that is delivered more easily and conveniently.
"Xoft's proprietary Electronic Brachytherapy was designed to leverage the
clinical benefits of both traditional brachytherapy and external beam
radiation while reducing the time required to deliver the therapy from weeks
to days," said Michael Klein, Xoft CEO and president. Strachan has over 30 years of mineral exploration experience in the
western United States and Africa. Tonogold does not undertake any obligation to
republish revised forward-looking statements to reflect events or
circumstances after the date hereof or to reflect the occurrence of
unanticipated events.

dose proves

Words such as "expect (s),"
"feel(s)," "believe(s)," "will," "may," "anticipate(s)," and similar
expressions are intended to identify forward-looking statements. Kurtzman and the 75-year-old
patient will be available for interviews following the first implant.

contributes uranium

, Xoft, Inc. A unique advantage is that it
also minimizes radiation exposure to treatment staff. Mr.
degree in Geology from California State University in Fresno and an M. He has worked well with Calista Corporation,
the underlying property owner, and achieved all the goals we set for him.
Tonogold Resources is the parent company of Mesa Uranium, Inc. Cesium-131
seed has a significantly higher dose rate than current
treatments , allowing for the delivery of more radiation in a
shorter period of time.

progeny mitigation

"I am proud
to have been involved in the development and testing of this breakthrough
therapy and look forward to being able to make it available to my patients. Joe Minerals as an
exploration geologist. Mr. Forward -looking statements are
statements that are not historical facts.

uranium risks

For the past 19 years, Mr. As we've changed focus from small tailings properties to larger
exploration projects, it makes sense to add an experienced exploration
geologist to our full-time management team. ("Tonogold") which is intended to be covered by
the safe harbor for "forward-looking statements" provided by the Private
Securities Litigation Reform Act of 1995. Readers are cautioned not to place undue reliance on these
forward-looking statements. Tuesday's implant is among the first in the world
using the radioactive isotope using this new isotope developed
for LDR (low dose radiation) brachytherapy seed treatment.

radiation primordial

"
The investment also provides the opportunity to accelerate development of
additional indications for this innovative technology, including potential
treatments for gynecological, lung , and other cancers.
"As electronic brachytherapy moves closer to clinical practice, all
indications are that this technology represents a leap forward in cancer
treatment," said Vivek Mehta, MD, Director for the Center of Advanced Targeted
Radiation Therapy at Swedish Cancer Institute in Seattle.

PRESS RELEASE Tonogold Resources Inc. Appoints Donald Strachan Vice President Exploration and to the Board of Directors

is a minerals exploration company headquartered in
La Jolla, California with gold and silver properties in Alaska and Nevada.

dose proficiency

Xoft Secures $30 Million Financing Round as Electronic Brachytherapy Breast Cancer Treatment Approaches Commercialization

Mr. Strachan has specialized in southern
Nevada and is based near Reno, Nevada.m.

progeny uranium

Currently, Mr.

Safe Harbor Statement Under the
Private Securities Litigation Reform Act of 1995

This press release contains certain forward-looking information about
Tonogold Resources, Inc., that
could cause actual results to differ materially from those expressed in, or
implied or projected by, the forward-looking information and statements .

epa decay

NOTE: Axxent is a trademark of Xoft, Inc. (OTC: TNGL) has
appointed Donald Strachan to the Board of Directors and to the position of
Vice President, Exploration. For more
information on the Company visit their website www..

238 decay

This means that radiation treatment
centers will have much more flexibility in installing the equipment in a
greater number of facilities and in scheduling patients for therapy."

Mr.

mev technologists

Mr. Mr. Strachan replaces William R.tonogold.

cosmogenic technologists

In its first indication for use, the Axxent Electronic Brachytherapy
System provides both the patient and the radiation oncologist the opportunity
to reduce the time required for radiation therapy for early stage breast
cancer from seven weeks (for external beam radiation therapy) down to five
days.

Tonogold Resources, Inc..

decay intruder

The Axxent Electronic Brachytherapy System, pending clearance from the
FDA, uses disposable micro-miniature x-ray radiation sources to deliver
treatment . All of Xoft's current
investors participated, including MPM Capital, Sutter Hill Ventures, Frazier
Healthcare Ventures, Cutlass Capital, Frantz Medical Ventures and Mosaix
Ventures. This may accelerate
the choice towards breast-sparing lumpectomy surgery instead of a full
mastectomy (which typically does not require a long course of radiation).
His performance on Nyac was a key element in making this decision.
These risks and uncertainties include: our lack of operating revenue and
earnings history, our need for additional capital to pursue our business
strategy, the grade and quantity of minerals in our projects may not be
economic, we do not have fee title to our properties, but derive our rights
through leases and the Mining Law, we are a non-reporting company and as
such do not make periodic filings with the Securities and Exchange
Commission, we trade on the Pink Sheets and there can be no assurances that
a liquid market will develop in our securities, mining is subject to
extensive environmental regulations and can create substantial
environmental liabilities, gold and silver are commodities which have
substantial price fluctuations, a drop in gold and/or silver prices could
adversely affect future profitability and/or capital raising efforts, and
mining can be dangerous and present operational hazards for employees and
contractors.