In Boardman and Kendell (1970a) m.l. estimation of the parameters from right censored, compound exponentials was considered when the exact failure times were known. In the present paper approximate m.l. estimates are obtained when the data are collected only atkspecified time intervals. The properties of an initial estimator are studied and shown to compare very favorably with those found above. A numerical example is considered to illustrate the use of the grouped estimators.