Valdez daily prospector., 1909-01-15
LANOLOCK BAY
 COPPER CLAIMS
Rystrom & DoIan's Company Preparing for Extensive
 Development.

Located in the vicinity of the well known Copper Mountain mining re- zion, the oldest on Prince William Sound, is the copper property of the Landlock Bay Copper Mining Com pany, consisting of nine claims, in- cluding several fractions, comprising about 12O acres, and occupying the greater part of small peninsula jutting from the south shore of Land lock Bay, opposite Copper mountain. It is about twenty miles southwest of Valdez.
 In the Copper Mountain district are the Ellamar mines, which has pro- duced over S1 ,OOO, ,OOO; the Three Man Mining Co.'s claims, the Standard Copper Co.'s claims, and the property of the Galena Bay Mining Co.
 w. B. Hcidorn, q pioneer miner of the Prince William Sound country, was the original locator of the Land lock Bay Copper Mining Company's ground.
 It eventually fell into the hands of RystrOm, Dolan and Little, who be- gan development work with such re- suits that company was formed for the purpose of extending the opera tions and placing the property on a producing basis as soon as develop ment disclosed sufficient ore bodies.
 Description of Ore Showing.
 The geology of this property is a common phase of that of the Copper Mountain region in general, where the prevailing rocks are slates and graywhacks, mingled with layers and masses of dioritic greensboro, the whole formation being folded and fractured in complex manner. The ore occurs as chalcopyrite (sulphide of iron and copper) mingled with py- rite and pyrrholite tiron sulphides) in flat lenzes on layers, either in the greensboro or in the slate, often close to contact of the two.
 The present workings expose what appear to be two fairly consistent layers of ore from one to four feet in thickness and carrying from to 7 per cent in copper, as measured and sampled in severgl places.
 One vein follows a contact between greensboro and slate, the other vein being about 15O feet south of the con- tact. Other smaller veins show at | several points both in slate and in greensboro. A tunnel has been run which crosscuts the formation until it reaches the vein lying between the contact. At the contact shaft is sunk and several tunnels run along the ore. The same vein is exposed on the surface above the tunnel by a few shallow cuts and small shaft. To reach the vein lying 15O feet south of the contact vein tunnel 15O feet, crosscutting the formation has been run. It cuts through several smaller veins enroute.
 Further to the east q line of cuts and trenches along the contact ex- pose more or less of ore for a thousnd l feet.
 The formation is considered prom
 
 proven value have been found in the near neighborhood of this ground. The veins now showing are wide enough and of high enough grade to pay if their extent along strike and dip are great enough to warrant the installation of equipment to work them economically. The indications point to depth of the veins, and that the values will increase with depth.
 Conditions for working this proper ty are exceedingly favorable. About 1000 feet from the tunnel sites is a place on Dolan bay where deep wa ter comes within feet of the shore. Here a wharf and ore bunkers could be built for an unusually small figure The ground from the workings to this point is sufficiently level for the building of q surface tram at a req sonable cost. Timber suitable for mining and structural purposes is plentiful.
 Harrington & Storm, mining engi- neers of Valdez, made comprenen- sive report on this property last sum- mer. They are recognized as a con- servative, reliable firm, and their re- port was considered encouraging by the company, with the result that Dr. Rystrom, the president, is now in the states securing funds by the sale of stocks to act. on the suggestion con- tained in the report: That the prop erty is q promising prospect warrant ing the expenditure of money in it's further development.