Tex. Business & Commerce Code § 15.11: PARTY TO SUIT MAY SUBPOENA WITNESS.

(a) A party to a suit brought to enforce any of the prohibitions in Section 15.05 of this Act or to enforce the laws conserving natural resources may apply to the clerk of the court in which the suit is pending to subpoena a witness located anywhere in the state. On receipt of the application, the clerk shall issue the subpoena applied for but may not issue more than five subpoenas for a party without first obtaining the court's written approval.

(b) A witness subpoenaed under Subsection (a) of this section who fails to appear and testify in compliance with the subpoena is guilty of contempt of court and may be fined not more than $100 and attached and imprisoned in the county jail until he or she appears in court and testifies as required.

Added by Acts 1983, 68th Leg., p. 3019, ch. 519, Sec. 2, eff. Aug. 29, 1983.