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Zonolite Company / W. R. Grace & Co. plant at Denver, Colorado

W. R. Grace & Co.'s sworn answers in a 1987 lawsuit, Williams against National Gypsum, list Denver, Colorado, among the plants where its Zonolite Mono-Kote fireproofing was made, saying of each product that it "was manufactured at some or all of the plants listed."1 For Zonolite Mono-Kote MK-3 the answers give Denver's approximate dates as 1959-1973; for Zonolite Mono-Kote MK-1 they say the dates of production "are not known."1 The same answers say MK-1 was "Produced by Zonolite Company from 1959," and MK-3 was produced by Zonolite Company "from 1959 to 1963" and by Grace "from 1963 until 1973"; they do not say which company ran the Denver plant.1

Grace described both products as light beige cementitious fireproofing.1 It gave MK-1's asbestos as "approximately 11.9% short fiber Chrysotile asbestos," and MK-3's as "approximately 13.23 percent 7M" and "12.18 7R" short fiber chrysotile asbestos by weight; those figures describe the products, not Denver's output in particular.1

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Location

Denver, Colorado, the city named in the documents. The dot marks the city, not the plant's address.

Asbestos products made here

The products documents say were made at this plant, with the years a document gives for the product here. Each product's page has what the documents say about it, including its asbestos content.

What each document says

Every statement about this plant in the documents, in each document's own words.

W. R. Grace's Answers to Plaintiffs' Interrogatories in Williams v. National Gypsum (1987)

  • Asbestos products made: “Zonolite Mono-Kote (MK-1) (dates not known); Zonolite Mono-Kote (MK-3) 1959-1973. "The product was manufactured at some or all of the plants listed below."” (W.R. Grace & Co.), p. 431

See also

References

  1. W. R. Grace's Answers to Plaintiffs' Interrogatories in Williams v. National Gypsum (October 15, 1987), pp. 43–45.

Cite this page

“Zonolite Company / W. R. Grace & Co. plant at Denver, Colorado.” AsbestosClaims.Law Library. https://asbestosclaims.law/library/plants/denver-co-w-r-grace.

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