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Material Matters
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Lisa Challenger
CEO, Shareholder
Thomas J. Krall
Senior Soil Scientist
Vanessa Spychola
Business Manager
Mikayla Regan
Wastewater & Residual Scientist
Christine McLain
Data Specialist II
+ 3 more
Lindsay Benko
Soil Scientist I
Jacob Hawkins
Soil Scientist II
Current role
