Simultaneous measurements of the time resolved three-components of the velocity field of the two phases in round turbulent particle laden jets in crossflow will be presented. The study of jets in crossflow that are laden with particles is a simple configuration of a complex flow which has multiple engineering applications, such as in air pollution, industrial burners, chimney emissions, chemical mixing and wastewater discharges. The two phases of the flow, the dispersed phase with large solid particles, and the fluid phase which is visualized using small tracer particles, were measured and simultaneously separated to study the effects of one phase on the other. The experiment involves water sources mixed with the dispersed phase particles injected into fresh water crossflows within the windowed test section of a water channel. Both the injected flow and the crossflow were seeded with small tracer particles. Mean and fluctuation three-components of the velocity of the source fluid and dispersed phase (large particles) were measured in the streamwise and cross section of the flow using time resolved stereo particle-image-velocimetry. Present experimental measurements show for the first time in particle laden jets the full 3D velocity field and the evolution in time of large and small coherent structures present in the flow. Also, a review of other experimental techniques used to obtain velocity and concentration information in jets and plumes in crossflow for environmental applications will be presented.