CHAINSAW MILLING IN GHANA: CONTExT, DRIVERS ... - Fornis.net

Chainsaw milling in Ghana: context, drivers and impactsAnnex 1. Employment estimatesFew direct data are available on employment created by the illegal chainsaw sector. Anapproximation of the number of full-time jobs created by CSM can be derived from estimatesof total production (Tables 13 and 14), information about the productivity of the various workstages in the chainsaw product chain and average crew sizes (data mostly derived from Adamet al. 2007a and Marfo and Acheampong 2009).The estimate reported in Table 19 is derived as follows:Definition of parameters unit measured calculated referencevalue resultProduction dataannual volume of timber a m 3 .y -1 756,815 Table 13processed (local marketand direct export market)annual volume of timber b m 3 .y -1 558,054 Table 13processed (local market)recovery rate c % 30.3 Table 13annual RWE of processedchainsaw lumberd=100*a/cm 3 .y -1 2,497,739 Table 13volume processed percrew per operationannual number of operationsper operatorannual volume processedper crewStump site (local and direct export markets)5.94 Table 760 Adam et al.e m 3 ..crew -1operation -1f operations.crew -1 .y -1 2007a; Marfo etal. 2009g=e*f m 3 .crew -1 .y -1 356.406 Adam et al.number of crews h=d/g 7,008average size of operating i workers.crewcrew -1 2007a; Marfo etal. 2009number of workers(stump site)j=h*i 42,049Haulage (local and direct export markets)average load per truck k m 3 .truck -1 26.5 Adam et al.2007a; Marfo etal. 2009annual number of roundtrips per truckannual volume of lumberhauled per trucknumber of trucks neededto transport annual productionvolumel roundtrip. 96 Table 8truck -1 .y -1m=k*l m 3 .truck.y -1 2,544n=a/m trucks 29760