07-10-2023, 11:03 PM
how did the arsenic get there?
Arsenic was used as a poison, and added to canec, which most houses in Hawaii used as a ceiling material
From.. https://imagesofoldhawaii.com/canec/
Between 1879 and 1948, Waiākea Mill Company conducted mill operations at Waiākea Pond. Bagasse – a by-product of sugarcane – became a secondary industry, first as a fuel for the mills’ boilers, then as the main ingredient for a wallboard product.
Which further on states..
It was treated with inorganic arsenic compounds to discourage mildew and insects. In addition, the wallboard was treated against termites with calcium arsenate and arsenic, and finally hydrosulfate was added to ‘set the size,’ inhibit the absorption of water and harden the board.
Arsenic was used as a poison, and added to canec, which most houses in Hawaii used as a ceiling material
From.. https://imagesofoldhawaii.com/canec/
Between 1879 and 1948, Waiākea Mill Company conducted mill operations at Waiākea Pond. Bagasse – a by-product of sugarcane – became a secondary industry, first as a fuel for the mills’ boilers, then as the main ingredient for a wallboard product.
Which further on states..
It was treated with inorganic arsenic compounds to discourage mildew and insects. In addition, the wallboard was treated against termites with calcium arsenate and arsenic, and finally hydrosulfate was added to ‘set the size,’ inhibit the absorption of water and harden the board.