Abstract: A bag for handling ore samples constructed from a flexible semipermeable sheet material folded to have a top opening, an obverse side, a reverse side, and at least one folded seam. The folded seam comprises an edge of the obverse side and an edge of the reverse side folded together and secured along a path adjacent to the fold. The bag may have a wrap around label disposed over and secured to the folded seam such that a front portion of the label is disposed adjacent the obverse side of the bag and a back portion of the label is disposed adjacent the reverse side of the bag. The label bears indicia on the front portion and on the back portion wherein the indicia on the front portion is machine readable bar code and human readable indicia and the indicia on the back portion is human readable and corresponds to the indicia on the front portion. One embodiment of the bag has a secured lock top which can be interchangeably opened and closed by manipulation of a configuration of the top portion of the bag.