Mountain City Copper Co. v. Korth

77 F. Supp. 248, 36 A.F.T.R. (P-H) 1489, 1948 U.S. Dist. LEXIS 2654
CourtDistrict Court, D. Utah
DecidedMarch 2, 1948
DocketCiv. No. 934
StatusPublished

This text of 77 F. Supp. 248 (Mountain City Copper Co. v. Korth) is published on Counsel Stack Legal Research, covering District Court, D. Utah primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Mountain City Copper Co. v. Korth, 77 F. Supp. 248, 36 A.F.T.R. (P-H) 1489, 1948 U.S. Dist. LEXIS 2654 (D. Utah 1948).

Opinion

JOHNSON, District Judge.

This case came on duly for hearing January 19th to January 22nd, 1948. Evidence was adduced, a stipulation of facts marked Exhibit 1 was introduced and admitted in evidence and the issues stated in the Pretrial Orders, agreed to by both parties to be satisfactory, were submitted for decision. The court being now fully advised makes the following:

Findings of Fact

1. When plaintiff acquired the mining property in question from Rio Tinto Mining Company the latter had developed the mine by means of the No. 1 inclined shaft to the 200' level where it had encountered rich ore; had some limited development .workings on the 200' level consisting of drifts and crosscuts, inadequate to outline and determine the extent of the ore body; to ascertain the characteristics, values, manner of occurrence, continuity, or distribution of values in the ore; to ascertain the nature of the hanging and foot walls and the nature generally of the country rock containing the ore body or bodies.

2. At the time of acquisition of the mine, the management of Mountain City Copper Company concluded that in order to make maximum recoveries of the values in the mine, it was necessary to reach reliable conclusions: — as to how to mine the •ore bodies; as to whether a concentrating mill would be economically desirable, and, if so, what its characteristics and capacity should be; as to how large a camp for living quarters for personnel should be built which' would depend in large part upon the method of mining and what kind and capacity of mill, if any, determined upon; and as to the securing of essential roads and equipment to transport ores and concentrates to railheads • for carriage to smelter; and that in order to reach such conclusions it was essential to outline and determine the extent and continuity of the ore body; to ascertain the values and distribution of values in'the ore body; to ascertain the metallurgical characteristics of the ore; to ascertain the nature of the walls and the physical characteristics both of the country rock and the ore body; and to ascertain the effect of strong cross faults on the ore occurrence and on the structural strength of the ore.

3. From acquisition through February 16, 1936, plaintiff excavated shafts, drifts, crosscuts, raises, winzes and drilled diamond-drill holes. The original No. 1 Shaft was enlarged and retimbered for 241 feet and was sunk an additional 251 feet in 1932 and 1933, completing it to the 400' level. The No. 2 vertical shaft (3J4 compartments) was sunk 583.1 feet in 1933 and 1934, completing it to the 500' level. Durr ing the first half of 1935 a winze was sunk from the 500' level to the 600' level. Through September 30, 1935, the total footage excavated amounted to 8743.6 linear feet, including 241 feet o-f shaft enlarging, 834.1 feet of shaft sinking, 200.5 feet of winzing, 3337 feet of drifting, 155.5 feet of raising and 3975.5 feet of crosscutting. Of this total footage (8743.6 feet), 1103.5 feet were advanced in ore and 7640.1 feet in waste. Shaft stations and sumps were also excavated. The total cost of the above work through September 30, 1935 was $376,236.00 and total costs to September 30, 1935 for mines and mining claims, excavations, equipment, supplies, etc., was $867,282.00. The work above described was carried on continuously into and through the period between October 1, 1935 and February 16, 1936, during which latter period the total advance amounted to 1648 linear feet, of which 1333.5 feet were in ore and 314.5 feet in waste.

4. The management on October 1, 1935 knew that the ore body contained two [250]*250classes of ore; one of such character or richness that it would yield the most profit by being shipped without treatment or concentration directly to the smelter, hereinafter called “shipping ore”; the other of different character or lesser value which could be profitably exploited only by concentrating it in a mill or which could be more profitably exploited by concentrating it in a mill, hereinafter called “milling ore”; that the ores could not be classified as between shipping and milling ores solely on the basis of copper content, but that certain metallurgical characteristics of certain ore made it more profitable to mill high grade ore and that other metallurgical characteristics made it more profitable not to mill certain comparatively low grade ore but to ship it directly for smelting, and that these two classifications of ore to an undetermined extent did not occur regularly and separately in large blocks but were to an undetermined extent intermingled in an erratic fashion.

5. On October 1, 1935 plaintiff had not secured the information which it considered necessary as described in Finding of Fact No. 2 herein; but considered that it was necessary, in order to prevent the possibility of uneconomical exploitation of the mine to gain further information: — as to the way in which the two classes of ore were intermingled; as to whether the profitable ore body was continuous or whether parts of it were economically barren between the 200' and 300' levels and between the 300' and 400' levels; as to the size, shape and extent of the ore body; as to the characteristics of the ore body and whether it would stand or cave, thus requiring square set timbering to hold it and prevent serious losses in value due to adulteration with lower grade ores or waste rock; and as to the characteristics of the foot-wall and hanging wall and other country rock containing the ore body including knowledge as to whether or not the containing country rock would stand or cave thus adulterating the ore and requiring the support by timbering of such of the country rock as might cave and fall; as to how to mine the ore body, whether by top slicing, cut and fill or square set timbering methods; as to whether a concentrating mill should be built, and, if so, of what kind and capacity; based upon the decisions as to the mining and milling, the number of men that should be employed and the necessary facilities for housing and feeding of the men and such of them as had families; the method of transportation of ores and concentrates to the smelter, the number of trucks necessary therefore and the securing of suitable roads to railhead; and, if there was to be a mill, how to achieve a balanced operation as between shipping ore and milling ore so that there would be constant and adequate milling ore feed for the mill and constant and adequate shipping ore and concentrates for the trucks, thus preventing idle periods either in the mill or with the trucks, idleness of either or both being against the interests of economical and profitable operation of the mine.

6. The management decided, prior to October 1, 1935, to secure the above described information by: continuing drifts and cross cuts on the 300' and 200' levels and by widening the 201 drift; by the driving of raises between levels in various parts of the ore body, three raises to be driven on the 400' level to the 300' level and four raises from the 300' level to the 200' level; ’ by driving such drifts and cross cuts from the raises as would be decided; and on October 1, 1935 427 and 428 raises had been started and advanced two floors above the sill on the 400' level. The square set timbering method of advancing the raises was adopted because it was believed that the ore body in certain places would not stand without timber support and this method provided the flexibility of operation that would furnish the maximum amount of information from these workings.

7.

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§ 284
28 U.S.C. § 284

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77 F. Supp. 248, 36 A.F.T.R. (P-H) 1489, 1948 U.S. Dist. LEXIS 2654, Counsel Stack Legal Research, https://law.counselstack.com/opinion/mountain-city-copper-co-v-korth-utd-1948.