A report on the state of mines in the real of Coseguriachi, focusing on three or four of the largest ones. This report draws on a previous inspection in 1711. Consequently, this document is confusing, as reports from 1711 and 1718 are mixed together. Gives excellent information on all aspects of mining. (T. Barnes) (1976)

Capt. Antonio de Villalengua, lt. Alcalde mayor of San Diego, following orders from governor, creates a committee and he and they go about inspecting all the mines in San Diego and reports back that they are all operating according to regulations. (R. Davis) (1975)

Mateo complains about dangerous working conditions in the mines. Guajardo Fajardo sends diputados to investigate. They find bad conditions, but most of them own mines or shares in them and their report means an end to the investigation for the most part (T. Barnes) (1975)

Annual inspection of mines - list of mines, the names of the mines and the respective owners. (T. Barnes) (1975.

Valdez sends del Castillo to various places in Parral to check up on exploitation and abuse of Negroes, mestizos, mulatos and Indians in carbon factories - this, as a result of abuses reported to him. del Castillo visits many of the significant villages of the province, more with a mind of correcting rather than punishing. (T. Barnes) (1975)

Minutas de cartas from virrey to Corbalan in response to 100,000 pesos sent to Nueva Vizcaya for military expedition; ordering Corbalan to remit informe immediately concerning state gold asap; virrey acknowledges receipt of Corbalan's at Zapote, Aduana; index of Corbalan's letters received by viceregal office, mentions clandestine extractions of silver virrey orders that royal tribute exacted from Indians not be establishment of new real Caja at Rosario; virrey discusses manner of exacting tribute from Indians; index of letters from Corbalan to virrey; virrey awaits arrival of Buelna with 4 large gold nuggets; ordering Corbalan to send Sastre gunbelts, cartridge boxes; virrey sends Corbalan providencias agreed upon by real junta. (J. H. Ochs, February1988)

Rough drafts of letters from virrey to Corbalan in response to jurisdicciones of Fuerte, Sinaloa, Culiacan; virrey curtly asks for details of funds retained in Sonora for rescate de oro; state of Indians; Corbalan ordered to make visita of reales Sinaloa; virrey acknowledges receipt of financial account of expedition of Sonora; reply concerning Corbalan's proposal to establish new real Caja at Rosario; virrey acknowledges receipt state of Placeres at Cieneguilla, Zapote, la Aduana; receipt claim that he is unable to find anyone to whom he can entrust 140,000 pesos destined for Cieneguilla for rescate de oro; virrey requests detailed informe of state of reales; virrey Cieneguilla. (J. H. Ochs, February 1988)

Autos concerning the reported discovery of Almagres along the Colorado River in southern Texas in 1755. Miranda sets out with Ramon, Seguin and a group of men from the presidios San Antonio, Bahia del Espiritu Santo and San Xavier and a couple of Indians as guides. After a month of travel north from San Antonio, the group returns early March 1756 with a sample of the Almagres. Summary of trip, development potential of the mine area for settlers and the granting of a portion of the mines to the men, from ff. 17 - 19. Testing is performed on top and deep samples to determine quality and consistency. Small amounts of silver, greta, plomo and Magistral are found. Debates as to costs, practicality and richness of mine based on experienced Miner's opinion. (E. Wilson, November 1989)

Concerns letters from Cordero Ruiz and Amezua, asking government official to approve refund of money which was given to alcalde baes for military protection of real de Vallecillos. Series of autos and testimonies dealing with prosecution of Amezua and Cordero Ruiz, who are accused of illegal handling of stores and silver mines. Amezua was put in jail and got sick before testifying. Cordero Ruiz escaped from jail. Court reviews Cordero Ruiz and Amezua's claim of having businesses and silver mines. Salaries for mine workers are reviewed by the court. (M. Marroquin, August 1989)

Fuentes' letter to Palacio includes quote from Palacio with stated goal of fully exploiting mines of San Carlos Tamualipa suspension of Alcavala, Media anata; land made available to miners; extension of cattle grazing; wood, materials and equipment tax free; sale of gun powder at Mexico City price; quicksilver to be sold at San Luis price; as well as other ways of promoting metal production. Palacios to Croix expresses desire of miners for priest sundays and for festival days; tax on silver to construct church; need to develop water system. Discussion of favorable metal production in San Nicolas. List of group of miners some who are witnesses and elected members included with Nava and Fuentes in report promoting mining. Fuentes in letter to Palacios explains that some mines are not being worked due to absence of their discoverers, uneconomical conditions for exploitation, and lack of tools; abundance of veins and continual discovery. Lists made by Fuentes of San veins; quantity per load of ore extracted at each mine. Partial copy of duty charges of Alcabala from may - June 1768, includes who sold what to whom (especially food) (ff 316). Letter from Nava to Palacio discusses state of individual processing abilities; production capacity. Letter also tells duty Charged on silver and gold. (L. L. Woodward, October 1988)