Their perambulation had brought them to a folding table that had been set up in the open by T.R.’s staff. Above it was a pop-up canopy to protect them from whichever prevailed at the moment: merciless sun or drowning torrential rain. At the moment it happened to be the former. Plastic water bottles were passed out. The table supported a propane camp stove, some laboratory glassware, and a plastic bin containing an assortment of safety goggles. Waving off a diligent aide who wanted him to don protective eyewear, T.R. grabbed a glass beaker about the size of a coffee mug, walked over to the sulfur pile, and scooped up a sample of the yellow powder. Most of that he then dumped back out so that the beaker contained no more than a finger’s width of S. Meanwhile an aide was lighting a burner on the stove. T.R. carried the beaker over and set it over the pale blue flame. In just a few moments the lower part of the sample, in contact with the glass, changed its appearance, becoming liquid and smooth. T.R. turned the heat to a lower setting and picked up a pistol-grip thermometer. He aimed this down into the beaker, pulled the trigger, looked at the digital display. He gave it a little stir with a glass rod.