Wyo. Stat. § 1-12-107
When a witness fails to attend in obedience to a subpoena, the court or officer before whom his attendance is required may issue an attachment to the sheriff of the county commanding him to arrest and bring the person named before the court at a time and place fixed in the attachment, to give his testimony and answer for the contempt. If the attachment is not for immediately bringing the witness before the court or officer, a sum may be fixed in which the witness may give bond with surety for his appearance. The sum shall be endorsed on the back of the attachment. If no sum is fixed and endorsed, it shall be one hundred dollars ($100.00). If the witness was not personally served, the court may order him to show cause why an attachment should not issue against him.
W.S. 1-12-107