Atna has six properties in BC and the Yukon in which it holds mineral rights, and in one case patented mineral and surface rights. Four of the properties are volcanogenic base metal massive sulfide targets; one property is a Sedex base metal and gold property and one property is a volcanic rock-hosted gold prospect. Two of the properties have measured historic resources (non-NI 43-101 compliant), while the remaining four properties are at various stages of exploration.

Since the 1997 field season, only a minimal amount of exploration work has been conducted on the properties as the company shifted its primary interest to gold exploration and production. The properties have been explored to some extent in the past by means of geochemical sampling, geological mapping, and various geophysical techniques and have significant potential and warrant continued exploration for the discovery and development of base and precious metals.

Wolf Property 
Watson Lake Mining District
Yukon

Commodities
Zinc, Lead and Silver

Deposit Type
Volcanogenic Massive Sulfide

Location
The Wolf property is located in the Cyr Range of the Pelly Mountains 90km southeast of Ross River, 40km west of Tech-Cominco's Kudz Ze Kayah deposit, and 65km west-northwest of the Wolverine Zn-Ag deposit. It lies within map sheets NTS 105G/5&6 at Lat./Long. 61o20'N and 131o20'W. Access is principally by helicopter from Ross River. The terrain is moderately rugged with elevations from 1,400 to 1,940 meters

Land
The land holding consists of 18 contiguous unpatented mining claims totaling 372 hectares (918 acres)

Ownership
Atna holds a 65.58% joint venture interest with Yukon-Nevada Gold Corp. (originally YGC Resources) holding the balance. Partners participate in proportion to their interest or dilute

Resource
Historic non-NI 43-101-compliant resource of 4.1 million tonnes grading 6.2% zinc, 1.8% lead, and 84 g/t silver and remains open-ended at depth

History
The area of the Wolf claims has been explored for over fifty years. The first recoded discovery of base metal mineralization was made by Newmont Mining Corp. in 1955 but claims were not staked until 1966. In the following year, a tote road was extended into the property from the Campbell Highway. The claims ultimately were allowed to lapse and in 1972 Hesca Resources Ltd. staked the prospect and drilled a few shallow "x-ray" holes after which the claims were allowed to lapse. Newmont again staked claims in 1976 and explored the property by means of soil surveys, EM and magnetometer surveys, trenching, and a three-hole drilling program totaling 526 meters. One of the holes intersected 1.4m grading 5.6% Zn and 27.4 g/t Ag. In 1982 AMAX staked the land and proceeded with geological mapping and geochemical sampling, did no drilling, and ultimately dropped the property. In 1990 YGC Resources Ltd. staked the property and optioned the claims to Cominco. Their detailed report, filed with the Yukon mining agency, concluded that the area was remote and the geological environment limited to smaller VMS deposits. The property was returned to YGC Resources. In 1995 Atna Resources Ltd. optioned the property and, after soil sampling and hand trenching, initiated diamond drilling. Diamond drilling was conducted over the 1996, 1997, and 1998 field seasons, resulting in the completion of 45 core holes for a total of 10,507 meters of drilling. Since the discovery hole (WF97-07), which pierced 25.2 meters true thickness grading 6.94% ZN, 2.78% Pb, and 138.6 g/t Ag, many of holes have made base metal-bearing massive sulfide intersections of comparable grade.

Ty Property 
Watson Lake Mining District
Yukon

Commodities
Copper, Zinc, Lead and Silver

Deposit Type
Volcanogenic Massive Sulfide

Location
The property is situated 135 kilometers northwest of Watson Lake along the southern flank of the Simpson Range, 35 kilometers west of the highway between Watson Lake and Ross River at Lat./Long. 61o10'N and 130o10'W and can be located on the NTS 105G/1 map. It is 35 kilometers south of the Wolverine Zn-Ag deposit and is accessible by helicopter. Elevations range from 1,000 to 1,900 meters above sea level.

Land
The property consists of 38 mining claims encompassing 794.3 hectares (1,938 acres)

Ownership
Atna Resources Ltd. owns 30% interest in a joint venture with Consolidated Pacific Bay Minerals Ltd. which owns the remaining)

Reserve
None identified to date

History
Cyprus Anvil Corporation staked the "Py" claims over the property area in 1975 as a follow-up to a 1000 ppm Cu stream sediment anomaly. Cyprus carried out a program of mapping, soil sampling, and EM and IP geophysical surveys. No geophysical target was identified and the mineral claims were allowed to lapse. Northern Dynasty staked the area as the Lion claims to cover gold and arsenic stream sediment anomalies. The source of the anomalies was not located and the claims allowed to lapse. In 1994 Pacific Bay Minerals staked the TY claims along the northern part of the original Py claims. A soil grid sampling program over the property's southern half produced several base metal anomalies and the property was optioned by Westmin Resources Ltd.

Westmin conducted a regional airborne geophysical program in 1995 and in the following field season completed geological mapping, soil sampling, and ground magnetic and VLF surveys which outlined targets within the soil gridded area. Three diamond drill holes, for a total of 721 meters, followed. In 1997 Westmin conducted a second phase of soil sampling, ground magnetic surveys, and MaxMin EM geophysics. Westmin transferred its claim ownership back to Pacific Bay in October 1998. As a debt settlement between Atna and Pacific Bay, Atna received 30% 0wnership in the TY claims and an option to earn an additional 30% through work expenditures on the property. In 2000 Atna resources Ltd. conducted structural geological mapping and limited sampling over the western half of the property, based from a two-person fly camp.

Geology and Mineralization
The claims are located within the Finlayson Lake volcanic-sedimentary belt of southeastern Yukon, just northeast of the Tintina fault. The Finlayson Lake Belt rocks are host to recently discovered polymetallic massive sulfide deposits such as Kudz Ze Kaya and Wolverine. The Fynlayson Lake Belt is believed to have been displaced 450 kilometers to the southeast due to movement along the Tintina fault zone since mid-Cretaceous time.

The TY claims are underlain by deformed Mississippian metavolcanic and metasedimentary rocks that were intruded by Tertiary intermediate to acidic igneous masses. Highly quartzose metasedimentary or exhalative rocks form conspicuous layers in the stratigraphy and are believed to be arenaceous metasediments but may include silica exhalites as suggested by geochemical analyses. The quartzose rocks are foliated and compositionally layered and range from 10 to 90 meters in thickness, commonly being traceable for many kilometers. Quartz-sericite schistose rocks contain medium-grained blue quartz porphyroblasts and are interpreted to be felsic metatuffaceous rocks that are commonly interlayered with argillaceous rocks. Laterally restricted zones of massive barite with minor carbonate occur in this unit, with the largest mass found having a maximum thickness of 5 meters over strike lengths of 50 meters. Thin pyritic laminae occur discontinuously with the barite. There is a yellow-weathering, weakly foliated fine-grained rhyolite to dacite intrusive unit with fine disseminated grains of pyrite that may represent the core of a flow-dome. Graphitic argillites, as beds up to 100 meters in thickness, occur within the claim block.

Massive sulfide mineralization discovered on the claim block to date consists of a one-meter exposure of pyrite along a creek in the southern part of the property. This was the target area of Westmin's drilling that discovered no significant base metal sulfides.

Status
The sedimentary-volcanic contact with associated soil geochemical anomalies, particularly Zn, Pb, Cu, and Se, and the bedded barite lens near the northern edge of the property is indicative of a weakly mineralized distal VMS horizon. Sampling of this horizon may provide a vector towards more intense alteration and mineralization which could occur along strike or down dip.

Ecstall Property 
Skeena Mining Division
British Columbia

Commodities
Copper, Zinc, Gold, Silver, and Sulfur

Deposit
Volcanogenic Massive Sulfide

Deposit
72km SE of Prince Rupert and 94km from Terrace at Lat./Long.: 53o50'N and 129o30'W on NTS Map Sheet 103H/11W. Access is by helicopter or shallow draft boat along the Ecstall River, but logging roads reach to within 20 kilometers. Land
21 Patented Claims containing 807 acres plus 2 Crown Grant surface patents with timber rights totaling 105 acres

Ownership
100% Atna (3% to 2% NSR royalty to Falconbridge)

Resource
Historic non-NI43-101-compliant 7 Million Tonnes 2.5% Zn, 0.6% Cu, 0.5g/t Au, 20g/t Ag, 48.4% S

History
Since its discovery in the 1890s, small shipments of pyrite were made from the Ecstall property until the 1920s when Granby Mining investigated the property as a possible source of sulfide feed for the Anyox smelter. In the 1930s Ecstall Mining Co., a subsidiary of Texas Gulf Sulphur Co., acquired the deposit as a potential source of sulfur. Texas Gulf Sulphur conducted extensive surface and underground exploration that consisted of 7,830 meters of core drilling in 77 drill-holes and significant underground headings with the focus of developing a body of pure pyrite as a source of sulfur. Falconbridge inherited the property in 1985 and during 1986 and 1987 explored adjacent areas looking for additional massive sulfide mineralization. Based on their mapping, rock and soil sampling, airborne and ground geophysical surveys, and limited diamond drilling, Falconbridge discovered significant base metal mineralization at the nearby Thirteen Creek area and concluded that the Ecstall deposit was of volcanogenic origin. In 1993, Falconbridge made a strategic decision to discontinue exploration in British Columbia, opting to pursue international exploration. Following lengthy negotiations and numerous field examinations, Atna Resources Ltd. acquired the Ecstall property from Falconbridge in December 1993. During 1994 Atna undertook exploration work consisting of line-cutting, geological mapping, soil and rock sampling at both the Ecstall Mine and Thirteen Creek area. The property has seen no exploration since that time.

Geology and Mineralization
Massive sulfide mineralization at Ecstall is hosted in a northwest-trending Middle Devonian island arc assemblage of volcanic and sedimentary rocks, known as the Scotia-Quaal Metamorphic Belt, which has been folded, metamorphosed, and intruded by igneous masses of the Coastal Plutonic Complex. The most significant sulfide mineralization found to date is the Ecstall Deposit (a.k.a. Red Gulch Deposit) consisting of two lenses of massive pyrite containing a historic resource of over 6.9 million tonnes grading approximately 0.6% copper and 2.5% zinc, with low precious metal values. Included in this resource is a coherent zone of about 365,000 tonnes grading nearly 2% copper, about 17 grams per tonne silver, and about 0.7 gram per tonne gold. The above figures are historic values, which were calculated by Texas Gulf Sulphur and are from reports in files purchased and owned by Atna Resources Ltd. These values are presented to show the magnitude of the known sulfide system. There are several other important occurrences of sulfide mineralization within the Scotia-Quaal metamorphic belt. To the south, in the big bend of the Ecstall River is the Packsack deposit, clearly a volcanogenic massive sulfide deposit which has not yet been adequately explored. It consists of two lenses of massive pyrite with copper and zinc values, contained in schistose felsic volcanic rocks. As presently known, the Packsack system appears to be at least 600 meters long in strike direction and extends down-dip for at least 150 meters. Four kilometers to the east-southeast of Ecstall, across the Ecstall River, the Horsefly property contains a similar massive pyrite occurrence in felsic volcanic rocks; it has received very little work to date. About 25 kilometers north-northwest of Ecstall, the Scotia deposit consists of massive sphalerite with lesser amounts of pyrite and traces of galena and chalcopyrite, contained within high-grade gneiss with associated bodies of post-mineralization aplite and pegmatite. The Scotia deposit lies within rocks which are correlative with those which host the Ecstall and Packsack deposits, but the deposit is distinguished by its higher zinc content and lack of pyrite. The Scotia deposit is modest in size, containing a resource of 187,000 tonnes grading 11.8% zinc, 1.3% lead, 20.6 grams silver per tonne. The mineralogy of the massive sulfide bodies and related mineralization along the Ecstall River drainage system are relatively simple. The Ecstall deposit consists of coarse-grained granular pyrite and interstitial chalcopyrite, sphalerite, and some pyrrhotite. Polished sections have shown that pyrite grains are remarkably free of base metal sulfide inclusions. Galen is present but rare and traces of arsenic have been found in analytical results.

Status
No work has been done on the property since the mid-1990s. Geophysical and geochemical anomalies in favorable stratigraphy suggest that addition potential remains for the discovery of lenses of base metal sulfide mineralization within the known body of pyritic mineralization, if it extends to depth. The area outside the known extent of mineralization has been barely explored. Merchantable old-growth cedar and hemlock are documented on the two grants with surface and timber rights.

Uduk Lake Property 
Omineca Mining Division
British Columbia

Commodity
Gold

Deposit Type
Volcanic-hosted disseminated gold

Location
The Uduk Lake Property is located 65 kilometers south of Burns Lake at Lat./Long. 53o38'N & 126o00'W., located on NTS 93 E/9, F/12. Access to the property is by gravel logging road from Burns Lake. Glacial till covers subdued topography.

Land
Two large unpatented claims which cover 959.2 hectares (2,370.3 acres)

Ownership
Atna has 100% ownership of the mining claims

Resource
None defined

History
The property was originally staked in 1980 by Amax Exploration Ltd. who carried out some reconnaissance mapping and sampling but allowed the claims to lapse. In 1984 a Mr.Travis restaked the property and leased it to Asitka Resources Corp., who in the following year conducted rock and soil geochemical sampling and drilled 78 meters with a Winkie drill in three holes. Analytical values of the drill core ranged from 20 to 1450 ppb Au within a stockwork of quartz veining. Pacific Comox Resources Ltd. optioned the property from Mr. Travis in 1987 and in turn optioned the property to Chalice Mining Co. in 1988. The latter company conducted a program of line cutting, geological and geochemical exploration, an IP geophysical survey, and 358 meters of diamond drilling in five holes. Chalice did not exercise its option and the property reverted back to Pacific Comox. Pioneer optioned the property in 1993 and carried out a $50,000 geochemical soil sampling program of the C-horizon. In 1994 Pioneer conducted a program of trail building, more soil sampling, geological mapping, and mechanized trenching. A total of 401 grid soil samples were collected by Pioneer during the two years of its exploration program. About 5.5 kilometers of trails were cut and 333 continuous trench samples were collected and analyzed from six trenches totaling 424 meters. In 1997 Atna resources Ltd. conducted a program of 44 kilometers of line cutting, surficial mapping, and 3-dimensional IP resistivity survey that outlined three highly resistive zones that correlate well with the known soil geochemical anomalies. The property has been idle since that time.

Geology and Mineralization
Glacially derived overburden obscures more than 98% of the bedrock geology at the Uduk Lake property but overburden depth is generally less than a few feet. The only bedrock lithologies observable at the surface are Upper Cretaceous to Eocene trachyte, rhyolite to dacite flows, tuffs and breccias, tuffaceous siltstone, argillaceous siltstone, and heterolithic breccia, members of the Ootsa Lake Group. These strata have been injected by hypabyssal intrusions. The main regional structural trend is northwesterly and this trend is offset by northeast-trending structures. Mineralization of interest discovered to date at the Uduk Lake property is gold associated with silicification, pyrite introduction, and sericitization and argillation. Rock-chip samples have returned values up to 5.7 g/t Au with numerous samples over 1.0 g/t Au. Many areas have undergone two or three stages of silicification. Cryptocrystalline cherty quartz replacement is followed by progressively coarser grained quartz and quartz stringers. Pyrite is present in all stages, but pyrite content does not correlate directly with gold content. Maximum pyrite content is about 2% but overall it tends to be much lower, generally less than 0.5%. Potassium metasomatism is evident from introduced K-feldspar, mainly as rims on plagioclase. Sericite is present as an alteration product in the wallrock and within veinlets of quartz. Gold, silver, and arsenic mineralization appears to be associated with areas of more intense multiple-stage silicification and brecciation. Sulfides, mainly pyrite with minor bornite, do not necessarily correspond with better gold-silver values. The 1265 soil samples taken to date resulted in six strong coincident gold, silver, and arsenic anomalies. These correlate well with 3-D highly resistive zones. One of the resistive anomalies has been drill-tested for about one third of its length with anomalous but not ore-grade results. Of the six trenches which have been dug on the property all returned anomalous samples (>100 ppb Au) and the best values were 1.4 g/t Au over six meters in Trench #4, with the whole of the trench averaging 0.41 g/t Au.

Status
The Uduk Lake claims cover an area of sericitized rhyolite to dacite flows, tuffs, and breccias that are quartz-veined and contain anomalously high values of gold. Soil sampling outlined six area of anomalous gold, all of which deserve further exploration for a volcanic hosted or possibly intrusion-related mineral deposit. Three of the anomalies coincide with resistivity IP anomalies. The two best trenches of the 1994 program are located on the outer edge of resistivity Zone #2 and yielded the most significant gold values (0.54 g/t over 20 meters and 0.17 g/t over 22 meters). Zone #2 has an elliptical pipe-like morphology with dimensions of 150 by 300 meters. The third resistive zone is at the southern edge of the grid in a swampy region with coincident anomalous soil geochemistry. This area is new with respect to being a drill target and has the best geophysical response within the survey area. It is a circular pipe with a diameter of about 350 meters and is open to the south. The property at an early exploration stage and warrants further investigation. More trench excavation should be undertaken prior to drilling. Past exploration has only touched the upper reaches of a system, which may be epithermal, only showing anomalous but not ore-grade mineralization at the surface. The system may possibly be porphyry related as one of the 1988 drill holes intersected a quartz-eye rhyolite with disseminated pyrite.

White Bull Property 
Laird Mining Division
British Columbia


Commodity
Lead, Zinc, Gold and Silver

Deposit Type
The Target is Sedex type base metals and gold in silica boxwork

Location
The property is located in the Cassiar Mountains at the midpoint between Dease Lake, B.C. and Watson Lake (Yukon) at Lat./Long. 58o54'N and 127o55'W on NTS Map Sheet 94L/13. Access is by helicopter from Dease Lake or Watson Lake. Elevations range from 690 to 1,440 meters

Land
The property consists of two mining claims encompassing 802.6 hectares (1,983 acres)

Ownership
Atna owns 100% interest in the mineral rights of the two claims

Resource
Undefined as the property has not been drill-tested

History
The White Bull was first staked by Amoco Canada Petroleum Co. Ltd. in 1977 as the Wendy claims in their search for shale-hosted lead-zinc deposits. Amoco's attention was focused on acid-leached vegetation-bare zones and their filed work consisted of sampling, prospecting, and a two-line grid RAD-EM survey. Overall low and erratic base metal results were found over a strong EM response. Amoco failed to locate a sulfide source of ferricrete zones and the sulfate-rich leached areas and allowed the claims to lapse in 1981. The following year Esso Resources staked the area and carried out soil, water, rock geochemical, and HLEM and magnetometer surveys. This work identified a 100 to 200 meters-wide zones of sericite-quartz altered tuffs and argillites as possible sulfide-bearing units. Semi-massive sulfides were found and a drill program recommended but not initiated. Ownership of the claims was transferred to Homestake Minerals who carried out geological mapping and sampling in 1989. A lead (Pb) anomaly was identified with a strike length of over 500 meters and a width of 25 meters and a sulfide horizon was postulated below the acid-leached zone. Despite their findings, Homestake allowed the claims to lapse and in June of 1995 Atna Resources Ltd. staked claims to cover the White Bull prospect. A program of geological mapping and sampling was subsequently carried out. No drilling has been conducted to date.

Geology and Mineralization
The White Bull property lies within the Omineca Tectonic Belt, just west of the Rocky Mountain Trench and east of the Kechika Fault. The mining claims cover variably deformed Upper Cambrian to Middle Silurian Kechika Group argillites, tuffaceous volcanic rocks, carbonate, and schist that strike northwest-southeast and dip steeply to the southwest. The youngest rock unit in the belt is a felsic intrusive body which crops out in the center of the White Bull prospect. The intrusive exhibits strong quartz veining and is K-feldspathized and sericitized. Rocks underlying the claims are intensely folded and faulted. Mineralization on the White Bull zone consists of disseminated to massive fine-to medium-grained pyrite with minor sphalerite. Pyrite is generally associated with sericitic alteration and silicification. Massive barite and chert horizons may represent exhalative activity. Pyrite bands up to 2.8 meters wide occur in sericite schist and contain anomalous values in lead, silver, mercury, and barium. Within a 0.5 meter-wide and 50 meters long horizon, anomalous lead values, up to 8,845 ppm, have been found.

Status
The stratigraphy underlying the White Bull property shows features and a geochemical signature recognized as potential controls for Sedex base metal deposits. This favorable stratigraphy is extensive and can be correlated with rocks hosting significant Sedex-type deposits to the southeast at the Gataga District. The area is under-explored and has base metal anomalous sulfide bands. A silicate boxwork and massive pyrite has been discovered in the southeastern part of the claims. Detailed geological mapping and trenching of the sulfide-bearing shows should be undertaken and electromagnetic surveys conducted on the most impressive sulfide show. At the southern part of the acid leached zone, near a dolomite contact where anomalous gold values were found, additional geological surveys and sampling are necessary. High priority should be given to testing the 12 meters-wide silicate boxwork bed in the central part of the grid area. Diamond drilling is warranted at the barite/chert horizon and adjacent boxwork zone, especially where high lead values have been found to be present.