EXECUTIVE ORDER NO. 141

: The Act of Congress of the United States of July 1, 1902, known as the Philippine Bill of 1902, as amended, provides the system of mineral disposition.
: An amount of labor or improvement valued at P200 must be introduced annually on unpatented claims to maintain possession until the patent is granted.
: Failure to perform the required annual assessment work opens the claim to relocation, meaning it can be considered abandoned and can be taken over by others.
: Many claim holders believe they can hold their claims indefinitely by merely filing affidavits of annual assessment work without obtaining patents, but this is incorrect.
: The true requirement is the continuous performance of the required assessment work, not just filing affidavits which can be disproved by findings on the ground.
: They are declared abandoned and their declarations of location are cancelled.
: President Ferdinand E. Marcos signed Executive Order No. 141.
: They can be considered maintained if the holder performs the annual assessment work valued at P200 continuously until a patent is granted.
: The declaration of location of the mining claims is cancelled officially.