Below you can find the Until about 1926 20-mule teams hauled this mineral from mines in death valley to the railroad Jeopardy Words Answer. The answer to Until about 1926 20-mule teams hauled this mineral from mines in death valley to the railroad has 5 letters. This clue belongs to the Rocks & minerals category and is part of Jeopardy Word Level 846. If you scroll near the bottom you will find other clues and answers part of level 846