Some Spanish stuff from this link:
Treasure Numbers in Spanish Symbols Forum
SECTION IV.
The persons referred to in the preceding Sections must present a written
statement to the Deputation of Miners in that district, or in case there should
not be one in that district, to the nearest thereunto, specifying in it his name,
those of his associates (if he has any), the place of his birth, his place of
habitation, profession, and employment, together with the most particular and
distinguishing features of the tract, mountain, or vein of which he claims the
discovery : all which circumstances, as. well as the hour in which the discoverer
shall present himself, must be noted down in a register, kept by the
deputation and clerk (if they have one) ; and after this, the said written
statement, shall, for his due security, be restored to the discoverer, and notices
of its object and contents shall be affixed to the doors of the church,
the government-houses, and other public buildings of the town, for the sake
of general notoriety. And I ordain, that within the term of ninety days,
the discoverer shall cause to be made in the vein or veins so registered, a
pit of a yard and a half in diameter or breadth, and ten yards (yards') in
depth, and that immediately on the existence of the vein being ascertained,
one of the deputies in person shall visit it, accompanied by the clerk (if there
is one), or, if there be no clerk, by two assisting witnesses, and by the
Mining Professor (Perito Facultatiao) of that territory, in order to inspect
the course and direction of the vein, its size, its inclination on the horizon,
called its falling or declivity, its hardness or softness, the greater or less
firmness of its bed, and the principal marks and species of the mineral ; taking
exact account of all this, in order to add the same to the entry in the
register, together with the act of possession, which must immediately be given to the discoverer in my Royal name, measuring him his portion, and making
him enclose it by poles at the limits as hereafter declared ; after which an
authentic copy of the proceedings shall be delivered to him for the security
of his title.
This was the King's law. You like to quote it so much, you should know this. It required the paper work and it shows that every mine was worked by it's individual discoverer or owner and that the necessary paperwork had to be filed and a copy kept by the mine owner. A description of the mine and the area around it was all that was necessary for the king. It was also required that a map be made to the mine and kept in the archives.
SECTION XVIII.
That no one shall abandon the working of his mine without giving notice
to the respective Deputation, in order that an inspection may immediately be
had thereof by the Deputies, accompanied by the Clerk and Surveyors, who
must examine and measure the mine, particularizing all its circumstances,
and draw up a map describing its plan and outlines, which, together with all
the necessary information, must be preserved in the Archives, with liberty
of access to all persons who may wish to see it, or to take a copy thereof.
Paperwork, just like the government of today. It always has to be done. The individual mine owner could mark his trail any way he wanted to.
This part came from a user on that site named:Alechydell
The mine is to the east of the pass. Below the pass on the bank of the creek there are twelve arrastres and twelve patios. At the mine there is a tunnel 300 varas (835 feet) long that runs to the north. About 200 varas from the portal of this tunnel a crosscut is yellow and is one half-silver and one-fifth gold. Fifty varas from the mouth of the mine in a southerly direction will be found planchas de plata (slabs or balls of silver) weighing from 25 to 250 pounds each. In the rock above the tunnel is the name La Purisima Concepcion, cut with a chisel. The mouth of the tunnel is covered by a copper door and fastened with a large iron lock."
