Still working: heavy queries on the fallback index can run 20-40 seconds.
C.F.R.
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Title 49
» CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION › SUBCHAPTER D—PIPELINE SAFETY › PART 192—TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS › Subpart J—Test Requirements