The Chihuahua mint

 Joaquín Campa was a lawyer who was born and died in Chihuahua. He became politicised at a very young age and joined the liberal ranks. He took up various posts in the judiciary until he reached the rank of Magistrate of the Supreme Tribunal of Justice in Chihuahua. 

He fought against the French Intervention of Mexico and in August 1862 was president of the junta patriótica established in Chihuahua^{El Siglo Diez y Nueve, Tomo IV, Núm. 594, 31 August 1862}. However, in October 1865 as president of the Tribunal Superior he was one of the former enemies who signed the act of adhesion to the Empire^{La Sociedad, Tomo V, Núm. 871, 11 November 1865}.

He died in 1871.

Edward Francisco Potts was by 1860 “a distinguished English gentlemen of wealth and influence, a twenty years’ resident of Chihuahua and assayer at the mint”^{letter S. Hart, El Paso, to President James Buchanan, 21 January 1860 in report to Congress on the difficulties on Southwestern Frontier(footnote}. On 19 January 1860 he wrote from Chihuahua to Mr. Hart in El Paso, requesting the assistance of U. S. troops against rebels from Durangoibid..
In 1858 the faction then in power in Chihuahua gave Potts and the American Francisco Macmanus, representing the Compañía Americana del ferrocarril inter-océanico, a concession in Chihuahua to build a the railway within the stateLa Coalición, Chihuahua, núm. 12, 1 May 1858, but the concession was challenged La Sociedad, tomo II, núm. 333, 13 August 1858 and ultimately failed.}

On 29 May 1865 Potts was named by the Maximilian regime as a member of the Junta auxiliar de colonización in Chihuahua ^{El Diario del Imperio, Tomo I, Núm. 125, 1 June 1865}. These local juntas were made up of five hacendados or businessmen, two Mexican and three foreigners, who were tasked with developing the resources of their Departamento^{El Diario del Imperio, Tomo I, Núm. 90, 20 April 1865}.

Antonio Valero

In July 1879 a newspaper reported that through either ignorance or malice Valero was causing immense harm to Chihuahua businessmen and miners. Since his appointment the young Antonio Valero had upset all the owners of silver who had to deal with him. The difference between the assays made by M. Merino and A. Barbachano and those made by Valero could be up to forty milésimos^{La Libertad, Año II, Núm. 170, 24 July 1879}.