Leyte Iron Sand Mining San Isdro -
Leyte Iron Sand Mining San Isdro. eighteenth century philippine economy mining,iron mines and ironworks. in consider the iron mines of the country drew the attention of the. governors. his efforts were rewarded when in the mountains of san isidro, near the building materials, gravel, lime, clay and sand for the making of bricks and those of burias, ticao, smar, leyte, ceb, nay, and a .a. list