Letter from Carrie Flood to Dr Th. Krey, c/o Seismos GMBH, 3000 Hannover Haarstrasse 5, Postfach 5227, Germany PRofessor Gold and Mr Soter wish to thank him for his interesting letter about their paper entitled 'Apollo 12 Seismic Signal: indication of a Deep Layer of Powder'. They are taking into consideration the points which he brought out 9 February 1971