I received the following from Professor Alexander G. Parkhomov in response to an email inquiry I made yesterday.
Dear Frank Acland,
Really, the transfer into English on the site E-CatWorld was got not quite good. I moderately the abilities tried to correct it.
As I understood, you are the publisher of this site. It is good to place the text with drawings which I send, instead of the published. As my English isn’t ideal, you can correct the made mistakes.
As for fuel, there are no secrets isn’t present. Simply powder mix from pure nickel and 10% of Li [AlH4]. The heater is made of a heat-resistant alloy “nichrom”.
Below is a link to the PDF document that Dr. Parkhomov provided: