Five important coal basins were uncovered: in Virginia, North Carolina, the Appalachian chain from Maryland to Northern Alabama, Kentucky, Arkansas, and Texas.

发现了五个重要的煤矿盆地：弗吉尼亚州、北卡罗来纳州、从马里兰州到阿拉巴马州北部的阿巴拉契亚山脉、肯塔基州、阿肯色州和得克萨斯州。