FA56
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Frame ID: FA 56
Sample ID: 92235 (slide 372-2)
Magnification: 330 microns on long side
Illuminator: Vertical
Objective: 32x oil
Polarizer: Out
Analyzer: Out
Retarder Plate: Out
Filter:
Important Features: Glass spheres
Chambered glass spheres from Kentucky power plant burning low-sulfur, high volatile A bituminous Central Appalachian coal.