Appellants Kaiser Aluminum & Chemical Co. and several of its employees (collectively Kaiser) appeal a district court order enforcing subpoenas duces tecum issued by the Department of Labor’s Mine Safety and Health Administration (MSHA). Kaiser argues that MSHA does not have jurisdiction over the Kaiser facility in issue, and that certain documents are privileged. We affirm.
BACKGROUND
Kaiser’s Gramercy Works in Louisiana is a plant that processes bauxite into aluminum oxide, known as alumina. The alumina is sold to other concerns for smelting into aluminum ingots.
On July 5, 1999, there was an explosion which occurred in one of the digestion units at the plant and resulted in numerous injuries. MSHA began an investigation and decided to convene a public hearing. Under section 103(b) of the Federal Mine Safety and Health Act (“Mine Act” or “Act”), 30 U.S.C. § 813(b), MSHA may hold public hearings and issue subpoenas for the attendance of witnesses and the production of documents. The federal district courts have jurisdiction to issue orders enforcing MSHA subpoenas. Id.
Kaiser initiated the district court proceedings below by filing a motion to quash subpoenas issued by MSHA, claiming that they were overbroad. MSHA later sought to enforce certain subpoenas. Kaiser argued that MSHA did not have jurisdiction over its facility, and that certain documents were privileged under the attorney work product and “self-evaluation” privileges.
The district court required certain procedural safeguards for the benefit of Kaiser and its witnesses, but ruled that MSHA had jurisdiction over the facility. The district judge also agreed with a magistrate judge that certain pre-accident documents were not privileged, after both had reviewed the documents in camera.
DISCUSSION
A. District Court and Appellate Jurisdiction
This court sua sponte asked the parties to address appellate jurisdiction under the collateral order doctrine or another independent basis pursuant to 28 U.S.C. § 1291 or 1292. Upon further reflection and review of the record, we are satisfied that we have appellate jurisdiction under § 1291, which grants appellate jurisdiction over “all final decisions of the district courts.” In general, a district court order is an appealable final decision if it “ends the litigation on the merits and leaves nothing for the court to do but execute the judgment.” Catlin v. United States.
MSHA argues that while the district court ruled correctly, it should not have even addressed the scope of the Mine Act but instead should have summarily enforced the subpoenas.
B. Jurisdiction of MSHA over the Plant
Kaiser argues that MSHA does not have jurisdiction over the Gramercy Works, and that instead the plant is subject to regulation by the Occupational Safety and Health Administration (OSHA). Section 4 of the Mine Act, 30 U.S.C. § 803, provides that each “coal or other mine” is subject to the provisions of the Act. “Coal or other mine” is defined under § 3(h)(1) of the Act to mean:
(A) an area of land from which minerals are extracted in nonliquid form or, if in liquid form, are extracted with workers underground, (B) private ways and roads appurtenant to such area, and (C) lands, excavations, underground passageways, shafts, slopes, tunnels and workings, structures, facilities, equipment, machines, tools, or other property including impoundments, retention dams, and tailings ponds, on the surface or underground, used in, or to be used in, or resulting from, the work of extracting such minerals from their natural deposits in nonliquid form, or if in liquid form, with workers underground, or used in, or to be used in, the milling of such minerals, or the work of preparing coal or other minerals, and includes custom coal preparation facilities. In making a determination of what constitutes mineral milling for purposes of this chapter, the Secretary shall give due consideration to the convenience of administration resulting from the delegation to one Assistant Secretary of all authority with respect to the health and safety of miners employed at one physical establishment
30 U.S.C. § 802(h)(1) (emphasis added). We agree with the Sixth Circuit that this statute provides a “ ‘sweeping definition’ ” for a mine, “encompassing much more than the usual meaning attributed to it.” Bush & Burchett, Inc. v. Reich.
The district court, agreeing with MSHA, concluded that the activities at the Kaiser plant constitute “milling” under the Act. There is little dispute about the industrial activities occurring at the Gramercy Works. Aluminum is produced in several stages. Bauxite, a natural ore consisting of a mixture of several minerals, is collected through surface mining. The bauxite is then subjected to the Bayer process to produce alumina. The alumina can then be smelted to produce aluminum metal.
The intermediate stage of producing alumina through the Bayer process is carried out at Kaiser’s plant. Raw bauxite is mined in Jamaica, where it is screened and dried to produce a bauxite concentrate. The screening removes limestone rocks from the bauxite. The concentrate is purchased by Kaiser and delivered to its plant.
The Bayer process consists of several steps including digestion, clarification, precipitation, and calcination. In digestion, the bauxite is mixed with sodium hydrox
The issue presented is whether the alumina production process employed at the plant constitutes “milling” under the Act. Milling is not defined in the statute; instead, under § 3(h)(1) quoted above, Congress expressly delegated to the Secretary of Labor authority to determine “what constitutes mineral milling for purposes” of the Act. We agree with the District of Columbia Circuit that this language “gives the Secretary discretion, within reason, to determine what constitutes mineral milling, and thus indicates that his determination is to be reviewed with deference ... by ... the courts.... In this highly technical area deference to the Secretary’s expertise is especially appropriate.” Donovan,
When the language of a statute is unambiguous, we “must give effect to the unambiguously expressed intent of Congress.” Chevron, U.S.A., Inc. v. Natural Resources Defense Council, Inc.
Kaiser is correct that the statute excludes liquid extraction of minerals unless the extraction takes place with workers underground. There is no underground extraction which takes place at the Gram-ercy Works. Instead alumina is “extracted” at a surface facility, using a chemical process involving liquid stages, as discussed above. But the statute by its terms covers a mine where the extraction of any nonliquid mineral, such as bauxite, takes place, as well as any facility where the milling and preparing of “such minerals” takes place. So the issue is whether the Bayer Process constitutes “milling” of solid bauxite ore.
Kaiser argues that, unlike other alumina companies, it does no crushing of bauxite at its plant. Webster’s Dictionary explains that the origin of the word “mill” goes back to the Latin “mola” for mill or millstone. The first definition is “a building provided with machinery for grinding grain into flour.” “Mill” can also mean “a machine for crushing or comminuting some substance,” and “to crush or grind (ore) in a mill.”
Kaiser insists that the liquid-based alumina extraction process, i.e. the Bayer process, is “refining,” not “milling,” and that refining facilities are regulated by OSHA.
Despite these arguments, we cannot say that MSHA’s statutory interpretation of milling is unreasonable under Chevron. At the outset, we note that the Inter-agency Agreement expressly includes alumina plants within the jurisdiction of MSHA. Despite some general language ceding regulation of “refining” to OSHA, the Agreement could not be more clear that “[pjursuant to the authority in section 3(h)(1) to determine what constitutes mineral milling ... MSHA jurisdiction includes ... alumina and cement plants.”
MSHA cites a dictionary of mining and mineral terms published by the U.S. Department of Interior which gives a definition of mill as any facility that reduces ores by means other than smelting.
Kaiser suggests that “milling” under the statute applies to physical processes only, and that the Bayer process is a chemical process whereby the chemical composition of the mineral is altered. The statute by its terms does not exclude chemical processes. MSHA cites legislative history of the Mine Act from a senate report that “it is the Committee’s intention that what is considered to be a mine and to be regulated under the Act be given the broadest possible interpretation,” and “that doubts be resolved in favor of inclusion of a facility within the coverage of the Act.”
Kaiser argues that Herman v. Associated Elec. Coop., Inc.
C. Privilege Issue
Kaiser claims that certain documents of the “Overpressure Protection Committee” were privileged, and that the district court misapplied the legal standards applicable to the privilege issue. This committee was formed by Kaiser in the late 1970’s to study the existing pressure vessels used at the Gramercy Works, and determine how procedures could be improved and liability minimized. It is unclear from the record and briefs whether the documents in issue were prepared by the committee itself or were prepared by others and presented to the committee for its review. The documents in issue are not a part of the appellate record.
Both the magistrate judge and the district judge reviewed the documents in camera, and ordered the disclosure of certain documents that were prepared before the accident. Kaiser claims that the documents were privileged under the work product and “self-evaluation” privileges.
The work product privilege applies to documents “prepared in anticipation of litigation.” Fed.R.Civ.P. 26(b)(3). The law of our circuit is that the privilege can apply where litigation is not imminent, “as long as the primary motivating purpose behind the creation of the document was to aid in possible future litigation.” United States v. El Paso Co.
As for the self-evaluation privilege,
AFFIRMED.
Notes
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. By extension of this argument, we assume that MSHA would have us summarily affirm the district court without reviewing the scope of the Mine Act.
.Kaiser and MSHA disagree on whether this argument was raised below. We assume without deciding that it was raised below.
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. Webster’s Third New International Dictionary 1434 (Phillip B. Gove ed., 1968).
. American Geological Inst., Dictionary of Mining, Mineral, and Related Terms 344 (2d ed.1996).
. Interagency Agreement, 44 Fed.Reg. 22,-827, 22,830 (1979); Memorandum of Understanding Between MESA and OSHA, 39 Fed. Reg. 27,384, 27,384 (1974).
. Interagency Agreement, at 22,827.
. , U.S. Dept, of the Interior, A Dictionary of Mining, Mineral, and Related Terms 706 (Paul W. Thrush & Staff of the Bureau of Mines eds., 1968).
. American Geological Inst., Dictionary of Mining, Mineral, and Related Terms 344 (2d ed.1996).
. S.Rep. No. 95-181, at 14 (1977), reprinted in 1977 U.S.C.C.A.N. 3401, 3414.
. H.R.Rep. No. 95-312, at 10-11 (1977), reprinted in Subcommittee on Labor of the Senate Comm, on Human Resources, 95th Cong., Legislative History of the Federal Mine Safety and Health Act of 1977, at 366, 368-69 (1978).
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. The self-evaluation privilege is also known as the “self-critical analysis” privilege and the "self-evaluative” privilege.
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