ACT and Steve Rothenberg have worked closely and successfully for several years now. ACT redesigned and refitted the commercially supplied bone-lead measurement system at Drew to improve its sensitivity to a level sufficient for measurement of environmentally exposed persons. The two institutions worked together to provide Drew with a second, improved XRF system to allow either simultaneous measurement of lead in tibia and calcaneus on one individual, or measurement of a single bone site on two people at once. ACT also supplied Drew with an improved analysis program for the extraction of lead signals from collected spectra. This code is in use at both Mount Sinai and Drew. The two institutions also share calibration phantoms that were made at Mount Sinai, following the same method which had been used to fabricate the phantoms in daily use on the Sinai systems.

Finally, the technical personnel at Drew responsible for performing the bone-lead measurements were all trained by ACT. This helps to ensure a consistency of method.