PA Mining Law - Section 273 (1) Practice test questions for the PA Mine Officials' Exam Progress Indicator: Question 1 of 14 1.  When providing fire protection by the use of waterlines, these water lines shall have the capability of delivering: Choices: 30 GPM at 30 PSI 50 GPM at 10 PSI 25 GPM at 25 PSI 50 GPM at 50 PSI