HC Deb 06 August 1940 vol 364 c4
5. Mr. A. Edwards

asked the Secretary for Petroleum when he can give the analysis of Scottish shale residue after treating to remove oil?

The Secretary for Petroleum (Mr. Geoffrey Lloyd)

I am circulating in the OFFICIAL REPORT a statement showing the result of the analysis of a typical spent shale as discharged from the retorts.

Mr. Edwards

As this material contains a substantial percentage of aluminium, will the hon. Gentleman call the attention of the Minister of Aircraft Production to a very valuable aluminium lying dormant?

Mr. Lloyd

Certainly, Sir.

Following is the information:

Per cent.
Carbon 3
Silica 48.5
Alumina 25.2
Iron Oxide 12.1
Lime 5.3
Magnesia 2.2
Sulphuric anhydride 3.2
Chlorides Trace
Alkalis Trace