[LB040045], Letter from Alfred Ord Tate to Frederick E Rands, April 16th, 1890
https://edisondigital.rutgers.edu/document/LB040045
Transcription
April 16th 1890 Fredrick E. Rands, Esq., Oakville, Ipswich, England, Dear Sir:- With reference to your letter of 19th March last, directing Mr. Edison's attention to recent explosions in two Welsh coal mines, which were probably caused by miners using naked lights, I beg to inform you that Mr. Edison is at present designing a battery for use in connection with a miner's electric lamp. The battery for supplying the current will be carried in the hand, and will be of a very light and portable design. This lamp, when completed, will be a great improvement types, and will be completely safe. Yours very truly, A.O. Tate Private Secretary