Service within, §24-13-26. Registered or certified mail. Service by, §24-13-24. Secondary evidence. Admissible, evidence unsuccessfully sought, §24-13-26. Service, §24-13-24. Notice to produce in lieu of subpoena, §24-13-27. Reasonable time, §24-13-26. Witness subpoena, §24-13-22. Unreasonable or oppressive. Quash or modify, §24-13-23. Witness subpoena. Issued under authority of clerk, service, §24-13-22. Subpoena defined as including, §24-13-21. Witness fees and mileage, amount, tender, §24-13-25. Law enforcement officer subject of subpoena, §24-13-28. Subsequent remedial measures, §24-4-407. Telephone conversations.