| The mercury deposit studied is located among sedimentary rocks which have been subjected to extensive quartzing and to other hydro thermal changes. |
| The operations of quartzing, charging, skimming, matte handling, firing and grating are carried out at Garfield about the same as at Anaconda and Cananea. |
| The wedging away, breaking and quartzing of the vein matter in tectonically critical zones does by no means indicate the end of the workability. |
