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(i) the protective value of the screens produced

on moonlight nights;

(ii) the protective value of screens on moonless

nights with and without the use of

parachute flares;

(iii) screening of water surfaces and other

conspicuous aids to navigation;

(iv) the improvement of operational technique

by adopting different layouts and types of generators, etc.

Household grates.

(e) Carry out experiments with smoke producing

briquettes burned in domestic grates to (i) determine their effectiveness from the point of view of visibility from the air (ii) to ascertain whether the public in large industrial areas will continue to burn the briquettes during the whole of the "Alert" period;

Industrial haze.

(f) consider methods to improve the effectiveness

of the present industrial haze scheme;

Research.

24.

(g) press on with research work with a view to

the improvement of existing apparatus and the development of new smoke producing devices with particular referenc to the possibility of using home produced fuel.

If an accelerated programme is decided upon an appreciable increase in schemes for protecting vital targets would be possible. If such a decision is made it is suggested that:

(a) authority would be required for the

immediate placing of orders for a further 250,000 generators (small type);

(b) a priority programme should be settled in

consultation with the Ministries of Aircraft Production and Supply and the Admiralty;

(c) authority should be given to the Ministry of

Home Security to augment its existing organisation as may be necessary;

(a) the War Office should be invited to arrange for

the formation of smoke companies or such other troops as may be available to provide operational personnel for schemes in accordance with the agreed programme of expansion;

(e) the Petroleum Department should be invited to take

steps where necessary to facilitate the supply of oil required.

(f) the Ministry of Supply should be invited to take

steps to facilitate rapid manufacture of generators. Ministry of Home Security,

2nd January, 1941.

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