 Technological advances during the 2000s have since boosted this output to 290 terawatts (290,000 gigawatts), high enough to actually study nuclear fusion at the point of detonation.The primary wooden structure of Trestle was 1,000 feet long, 125 feet (about 12 stories) tall, and constructed of 6.5 million board-feet of lumber, sufficient to support a fully loaded B-52 (then the largest and heaviest strategic bomber in the US inventory) while also minimizing any chance of interference from the ground or the structure itself, creating a reasonable simulation of airborne conditions.A mix of Douglas Fir and Southern Yellow Pine were used for the timbers, as both showed excellent EMP transparency with the former having the best tensile strength and the latter the best weather resistance.