Ask the Scholar
Page 2 of 2
I can add historical knowledge about this page.
Page image
OCR
TREASURY DEPARTMENT
UNITED STATES
PUBLIC HEALTH SERVICE
OFFICE OF
INDUSTRIAL HYGIENE
WASHINGTON, D. C.
AND SANITATION
Room 1-123, "C" Bldg.,
16 Seventh St., S. W.
May 23, 1930
Mr. H. H. Barker,
U. S. Radium Corporation,
535 Pearl St.,
New York, N. Y.
MAY %6-1930
Dear Mr. Barker:
You were kind enough to send Dr. Schwartz one
gram of luminous paint. I note that this paint is marked
Grade L, and I also understand through Mr. knowles that
the paint supplied by your company and used in the various
factories where he has been making surveys is of different
grades, identified by different letters. I should be very
much obliged if you would tell me what the different letters
signify. Do they signify different compositions or simply
different degrees of strength of the radium salt used in
making them up? I suppose that the luminous material
is made up by mixing a certain amount of radium bromide or
radium chloride with zinc sulphide and some other substances.
The point we are particularly interested in at the present
timesto know how the various grades manufactured by your
company differ from each other.
Yours sincerely,
James E. loves
(James E. Ives)
Physicist, U.S.P.H.S.
Page data
- Page
- 2
- Source index
- 0
- Type
- document
- Media ID
- 95c0cfa23bc76c2b
- Size
- unknown
Document data
- ID
- 75725404
- Core
- doc
- Type
- document
DTO data
{
"id": "75725404",
"sourceUrl": "https://catalog.archives.gov/id/75725404",
"contentType": "document",
"title": "Letters Received to H.H. Barker, May 23, 1930",
"citationUrl": "https://catalog.archives.gov/id/75725404",
"collections": [
"Safety Light Collection",
"Records Related to Radium Dial Painters"
],
"iiifBase": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/SLC/Radium/SLC_0002131.jpg",
"thumbnailUrl": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/SLC/Radium/SLC_0002131.jpg",
"largeImageUrl": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/SLC/Radium/SLC_0002131.jpg",
"imageCount": 2,
"hasImages": true,
"source": "import",
"hasTranscription": false
}
Context sent to Scholar
Document identity
{
"localId": "75725404",
"label": "Letters Received to H.H. Barker, May 23, 1930",
"core": "doc",
"dtoType": "document",
"citationUrl": "https://catalog.archives.gov/id/75725404"
}
Document source metadata
{
"id": "75725404",
"sourceUrl": "https://catalog.archives.gov/id/75725404",
"contentType": "document",
"title": "Letters Received to H.H. Barker, May 23, 1930",
"citationUrl": "https://catalog.archives.gov/id/75725404",
"collections": [
"Safety Light Collection",
"Records Related to Radium Dial Painters"
],
"iiifBase": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/SLC/Radium/SLC_0002131.jpg",
"thumbnailUrl": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/SLC/Radium/SLC_0002131.jpg",
"largeImageUrl": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/SLC/Radium/SLC_0002131.jpg",
"imageCount": 2,
"hasImages": true,
"source": "import",
"hasTranscription": false
}
Document source extras
{
"url": "https://catalog.archives.gov/id/75725404",
"naId": 75725404,
"levelOfDescription": "fileUnit",
"recordType": "description",
"ocrSource": "nara-archive"
}
Page context
{
"seq": 2,
"pageIndex": 0,
"type": "document",
"url": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/SLC/Radium/SLC_0002131.pdf",
"mediaId": "95c0cfa23bc76c2b",
"ocrText": "TREASURY DEPARTMENT\nUNITED STATES\nPUBLIC HEALTH SERVICE\nOFFICE OF\nINDUSTRIAL HYGIENE\nWASHINGTON, D. C.\nAND SANITATION\nRoom 1-123, \"C\" Bldg.,\n16 Seventh St., S. W.\nMay 23, 1930\nMr. H. H. Barker,\nU. S. Radium Corporation,\n535 Pearl St.,\nNew York, N. Y.\nMAY %6-1930\nDear Mr. Barker:\nYou were kind enough to send Dr. Schwartz one\ngram of luminous paint. I note that this paint is marked\nGrade L, and I also understand through Mr. knowles that\nthe paint supplied by your company and used in the various\nfactories where he has been making surveys is of different\ngrades, identified by different letters. I should be very\nmuch obliged if you would tell me what the different letters\nsignify. Do they signify different compositions or simply\ndifferent degrees of strength of the radium salt used in\nmaking them up? I suppose that the luminous material\nis made up by mixing a certain amount of radium bromide or\nradium chloride with zinc sulphide and some other substances.\nThe point we are particularly interested in at the present\ntimesto know how the various grades manufactured by your\ncompany differ from each other.\nYours sincerely,\nJames E. loves\n(James E. Ives)\nPhysicist, U.S.P.H.S."
}