CHEYENNE, Wyo. (AP) — Wyoming Gov. Matt Mead and other state officials are traveling to China this week for a conference on advanced coal technologies.

First Lady Carol Mead and the Mead’s two children are traveling with the governor at their own expense.

Secretary of State Max Maxfield is serving as acting governor until Mead’s scheduled June 11 return.

Members of Mead’s staff, officials from the University of Wyoming and some state legislators are also attending the third meeting of the Advanced Coal Technologies International Conference, which is held every two years. Earlier conferences have been held in Queensland, Australia, and Laramie.