MR is an incredibly varied and continually expanding field. While it is best known for its uses in chemical spectroscopic analysis and biomedical imaging, MR can be the basis of many other analyses. MR relaxation time measurements for example are now commonly used to analyse porous materials (e.g. rock cores) and food materials. Relaxation time measurements are usually based on longitudinal (T1) and transverse (T2) relaxation times, but it is increasingly common to combine these into relaxation correlation experiments, for example T1-T2. There are many similarities between 2D relaxation correlation experiments and 2D MR spectroscopy. In each case a 2D analysis permits better discrimination of the MR signal. In 2D MR spectroscopy the 2D plot shows signal intensity as a function of frequency with data processing via a 2D Fourier transform. In 2D relaxation correlation the 2D plot shows signal intensity as a function of signal lifetime(s) with data processing via a 2D Inverse Laplace transform. The T1-T2 measurement is ideal for samples with liquid like signal components with long T2 lifetimes. Solid-like signal components however have T2 lifetimes too short for useful measurement. Marreiros et al. recently reported studies of gas adsorption in MOFs using T1-T2 measurements but identified one of the core challenges to be measuring samples, such as solids, with short-lived T2 signal. We have recently developed a new relaxation correlation measurement that is designed to capture short lived transverse lifetime signal components. The new measurement, T1-T2*, captures solid and liquid signals permitting discrimination of species via signal lifetime(s). The T1-T2* method is facile and combines saturation recovery with free induction decays. The minimum observation time of the T1-T2* method is limited only by the instrument deadtime, which makes it ideal to measure rigid samples with short T2* lifetimes. T1-T2* measurements have been used to distinguish solid kerogen, from water and oil in shales, and to classify coal samples. In this work we use this method to analyze solid and liquid species in solid-state mechanochemical reactions for the first time. Furthermore, the entire mechanochemical process, from synthesis to analysis, may take place in the milling container without the requirement of sample removal and transfer.