This paper considers some empirical Bayes procedures which have been discussed by H. Robbins, E. Samuel, and M. V. Johns. These procedures are shown to be inadmissible relative to a class of priors and by using some of the results of Rolph  admissible procedures are found for two examples. For an introduction to the empirical Bayes approach see Robbins .
Glen Meeden. "Some Admissible Empirical Bayes Procedures." Ann. Math. Statist. 43 (1) 96 - 101, February, 1972. https://doi.org/10.1214/aoms/1177692705