<span>All Native American tribes used natural pigments; the very concept of chemical pigments had not even been invented yet when Indians still roamed free. And all tribes created hand shaped pottery because they had no access to machinery to do it for them.
Southwest tribes include: Apache, Comanche, Havasupai, Hopi, Jemez, Kiowa, Lipan, Maricopa, Mohave, Navaho, Paiute, Papago, Panamint, Pecos, Pima, Pueblo, Shoshoni, Soaipuri, Tewa, Ute, Walapai, Yavapai, Yuma and Zuni
While all of them produced hand shaped pottery decorated with natural pigments, most did so for their own use within the tribe. The first and perhaps most famous of the tribes to trade heavily in pottery were the Maricopa. Others soon followed the Maricopa example such as the Navaho which became even more famous for their jewelry than their pottery.</span>
This is the factor that allows pipelines to increase their capacity and move an increased amount of tonnage. When we increase the diameter of a pipe, this allows a larger volume of material (water, oil, etc.) to move through it. This means that we are able to move a larger volume (tonnage) of material in a shorter amount of time. This increases the efficiency of the pipelines in a very significant way.
