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Inventories | 12 Months Ended
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Dec. 31, 2022
Inventories |
Inventories | Note 10Inventories ​
​ | ​ | ​ | ​ | ​
​ |  | As of |  | As of
​ |  | December 31, |  | December 31,
Type of inventory |  | 2022 |  | 2021
​ |  | ThUS$ |  | ThUS$
Raw material |  | 27,035 |  | 12,508
Production supplies |  | 68,426 |  | 41,114
Products-in-progress |  | 590,946 |  | 527,118
Finished product |  | 1,097,874 |  | 603,036
Total |  | 1,784,281 |  | 1,183,776
​ As of December 31, 2022 and 2021, the Company held caliche stockpiles, solutions in solar ponds and intermediary salts amounting ThUS$ 513,209 and as of December 31, 2021 was ThUS$ 458,913 (including products in progress). As of December 31, 2022, bulk inventories recognized within work in progress were ThUS$ 122,284, while as of December 31, 2021 this value amounted to ThUS$ 111,316. As of December 31, 2022, bulk inventories recognized within finished goods were ThUS$ 198,796 (as of December 31, 2021, this value amounted to ThUS$ 99,551). As of December 31, 2022 and 2021, recognized inventory allowances, amounted to ThUS$ 104,057 and ThUS$ 75,892, respectively. For finished and in-process products, recognized allowances include the provision associated with the lower value of stock (considers lower realizable value, uncertain future use, reprocessing costs of off-specification products, etc.), provision for inventory differences and the provision for potential errors in the determination of inventories (e.g., errors in topography, grade, moisture, etc.). (See Note 3.15). For raw materials, supplies, materials and parts, the lower value provision was associated to the proportion of defective materials and potential differences. The breakdown of inventory allowances is detailed as follows:
​ | ​ | ​ | ​ | ​
​ |  | As of |  | As of
​ |  | December 31, |  | December 31,
Type of inventory |  | 2022 |  | 2021
​ |  | ThUS$ |  | ThUS$
Raw material and supplies for production |  | 4,186 |  | 1,865
Products-in-progress |  | 83,499 |  | 59,858
Finished product |  | 16,372 |  | 14,169
Total |  | 104,057 |  | 75,892
​ The Company has not pledged inventory as collateral for the periods indicated above. ​ As of December 31, 2022, and 2021, movements in provisions are detailed as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | As of |  | As of |  | As of
​ |  | December 31, |  | December 31, |  | December 31,
Reconciliation |  | 2022 |  | 2021 |  | 2020
​ |  | ThUS$ |  | ThUS$ |  | ThUS$
Beginning balance |  | 75,892 |  | 80,930 |  | 88,174
Increase in Lower Value (1) |  | 29,693 |  | (3,650) |  | (5,404)
Additional Provision Differences of Inventory (2) |  | (161) |  | 330 |  | (704)
Increase / Decrease eventual differences and others (3) |  | — |  | — |  | 1,244
Provision Used |  | (1,367) |  | (1,718) |  | (2,380)
Total changes |  | 28,165 |  | (5,038) |  | (7,244)
Final balance |  | 104,057 |  | 75,892 |  | 80,930
​
| (1) | There are three types of Lower Value Provisions: (a) Economic Realizable Lower Value, (b) Potential Inventory with Uncertain Future Use and (c) Reprocessing Costs of Off-Specification Products.
​
| (2) | Provisions for Inventory Differences generated when physical differences are detected when taking inventory, which exceed the tolerance levels for this process.
​
| (3) | This algorithm corresponds to the provision of diverse percentages based on the complexity in the measurement and rotation of stock, as well as standard differences based on previous results, as is the case with provisions relating to Commercial Offices.

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