Interrogatories are a helpful tool for discovery. Interrogatories are written questions which focus on any information relevant to the case.Are there different types of discovery requests? Rule 6.02 - Filing of Discovery and Related Materials. Learn About How to Make a Request for Production and Inspection During the Discovery Process in Texas. This article explains "requests for production," which are a tool for gathering evidence in a lawsuit as part of discovery. You need to speak to an attorney ASAP. • General Guidelines. Require that notification responses be sent to a United States Postal Service box in the name of the clerk.